20705479920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:940

約数の個数: 240

約数和(自身を含む): 70220422272

約数和(自身を除く): 49514942352

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 283, 307, 331, 360, 566, 614, 662, 720, 849, 921, 993, 1132, 1228, 1324, 1415, 1535, 1655, 1698, 1842, 1986, 2264, 2456, 2547, 2648, 2763, 2830, 2979, 3070, 3310, 3396, 3684, 3972, 4245, 4528, 4605, 4912, 4965, 5094, 5296, 5526, 5660, 5958, 6140, 6620, 6792, 7368, 7944, 8490, 9210, 9930, 10188, 11052, 11320, 11916, 12280, 12735, 13240, 13584, 13815, 14736, 14895, 15888, 16980, 18420, 19860, 20376, 22104, 22640, 23832, 24560, 25470, 26480, 27630, 29790, 33960, 36840, 39720, 40752, 44208, 47664, 50940, 55260, 59580, 67920, 73680, 79440, 86881, 93673, 101617, 101880, 110520, 119160, 173762, 187346, 203234, 203760, 221040, 238320, 260643, 281019, 304851, 347524, 374692, 406468, 434405, 468365, 508085, 521286, 562038, 609702, 695048, 749384, 781929, 812936, 843057, 868810, 914553, 936730, 1016170, 1042572, 1124076, 1219404, 1303215, 1390096, 1405095, 1498768, 1524255, 1563858, 1625872, 1686114, 1737620, 1829106, 1873460, 2032340, 2085144, 2248152, 2438808, 2606430, 2810190, 3048510, 3127716, 3372228, 3475240, 3658212, 3746920, 3909645, 4064680, 4170288, 4215285, 4496304, 4572765, 4877616, 5212860, 5620380, 6097020, 6255432, 6744456, 6950480, 7316424, 7493840, 7819290, 8129360, 8430570, 9145530, 10425720, 11240760, 12194040, 12510864, 13488912, 14632848, 15638580, 16861140, 18291060, 20851440, 22481520, 24388080, 28757611, 31277160, 33722280, 36582120, 57515222, 62554320, 67444560, 73164240, 86272833, 115030444, 143788055, 172545666, 230060888, 258818499, 287576110, 345091332, 431364165, 460121776, 517636998, 575152220, 690182664, 862728330, 1035273996, 1150304440, 1294092495, 1380365328, 1725456660, 2070547992, 2300608880, 2588184990, 3450913320, 4141095984, 5176369980, 6901826640, 10352739960, 20705479920]

約数ペア:

[(1, 20705479920), (2, 10352739960), (3, 6901826640), (4, 5176369980), (5, 4141095984), (6, 3450913320), (8, 2588184990), (9, 2300608880), (10, 2070547992), (12, 1725456660), (15, 1380365328), (16, 1294092495), (18, 1150304440), (20, 1035273996), (24, 862728330), (30, 690182664), (36, 575152220), (40, 517636998), (45, 460121776), (48, 431364165), (60, 345091332), (72, 287576110), (80, 258818499), (90, 230060888), (120, 172545666), (144, 143788055), (180, 115030444), (240, 86272833), (283, 73164240), (307, 67444560), (331, 62554320), (360, 57515222), (566, 36582120), (614, 33722280), (662, 31277160), (720, 28757611), (849, 24388080), (921, 22481520), (993, 20851440), (1132, 18291060), (1228, 16861140), (1324, 15638580), (1415, 14632848), (1535, 13488912), (1655, 12510864), (1698, 12194040), (1842, 11240760), (1986, 10425720), (2264, 9145530), (2456, 8430570), (2547, 8129360), (2648, 7819290), (2763, 7493840), (2830, 7316424), (2979, 6950480), (3070, 6744456), (3310, 6255432), (3396, 6097020), (3684, 5620380), (3972, 5212860), (4245, 4877616), (4528, 4572765), (4605, 4496304), (4912, 4215285), (4965, 4170288), (5094, 4064680), (5296, 3909645), (5526, 3746920), (5660, 3658212), (5958, 3475240), (6140, 3372228), (6620, 3127716), (6792, 3048510), (7368, 2810190), (7944, 2606430), (8490, 2438808), (9210, 2248152), (9930, 2085144), (10188, 2032340), (11052, 1873460), (11320, 1829106), (11916, 1737620), (12280, 1686114), (12735, 1625872), (13240, 1563858), (13584, 1524255), (13815, 1498768), (14736, 1405095), (14895, 1390096), (15888, 1303215), (16980, 1219404), (18420, 1124076), (19860, 1042572), (20376, 1016170), (22104, 936730), (22640, 914553), (23832, 868810), (24560, 843057), (25470, 812936), (26480, 781929), (27630, 749384), (29790, 695048), (33960, 609702), (36840, 562038), (39720, 521286), (40752, 508085), (44208, 468365), (47664, 434405), (50940, 406468), (55260, 374692), (59580, 347524), (67920, 304851), (73680, 281019), (79440, 260643), (86881, 238320), (93673, 221040), (101617, 203760), (101880, 203234), (110520, 187346), (119160, 173762)]