19712880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 240

約数和(自身を含む): 76602240

約数和(自身を除く): 56889360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 19, 20, 22, 24, 30, 33, 36, 38, 40, 44, 45, 48, 55, 57, 60, 66, 72, 76, 80, 88, 90, 95, 99, 110, 114, 120, 131, 132, 144, 152, 165, 171, 176, 180, 190, 198, 209, 220, 228, 240, 262, 264, 285, 304, 330, 342, 360, 380, 393, 396, 418, 440, 456, 495, 524, 528, 570, 627, 655, 660, 684, 720, 760, 786, 792, 836, 855, 880, 912, 990, 1045, 1048, 1140, 1179, 1254, 1310, 1320, 1368, 1441, 1520, 1572, 1584, 1672, 1710, 1881, 1965, 1980, 2090, 2096, 2280, 2358, 2489, 2508, 2620, 2640, 2736, 2882, 3135, 3144, 3344, 3420, 3762, 3930, 3960, 4180, 4323, 4560, 4716, 4978, 5016, 5240, 5764, 5895, 6270, 6288, 6840, 7205, 7467, 7524, 7860, 7920, 8360, 8646, 9405, 9432, 9956, 10032, 10480, 11528, 11790, 12445, 12540, 12969, 13680, 14410, 14934, 15048, 15720, 16720, 17292, 18810, 18864, 19912, 21615, 22401, 23056, 23580, 24890, 25080, 25938, 27379, 28820, 29868, 30096, 31440, 34584, 37335, 37620, 39824, 43230, 44802, 47160, 49780, 50160, 51876, 54758, 57640, 59736, 64845, 69168, 74670, 75240, 82137, 86460, 89604, 94320, 99560, 103752, 109516, 112005, 115280, 119472, 129690, 136895, 149340, 150480, 164274, 172920, 179208, 199120, 207504, 219032, 224010, 246411, 259380, 273790, 298680, 328548, 345840, 358416, 410685, 438064, 448020, 492822, 518760, 547580, 597360, 657096, 821370, 896040, 985644, 1037520, 1095160, 1232055, 1314192, 1642740, 1792080, 1971288, 2190320, 2464110, 3285480, 3942576, 4928220, 6570960, 9856440, 19712880]

約数ペア:

[(1, 19712880), (2, 9856440), (3, 6570960), (4, 4928220), (5, 3942576), (6, 3285480), (8, 2464110), (9, 2190320), (10, 1971288), (11, 1792080), (12, 1642740), (15, 1314192), (16, 1232055), (18, 1095160), (19, 1037520), (20, 985644), (22, 896040), (24, 821370), (30, 657096), (33, 597360), (36, 547580), (38, 518760), (40, 492822), (44, 448020), (45, 438064), (48, 410685), (55, 358416), (57, 345840), (60, 328548), (66, 298680), (72, 273790), (76, 259380), (80, 246411), (88, 224010), (90, 219032), (95, 207504), (99, 199120), (110, 179208), (114, 172920), (120, 164274), (131, 150480), (132, 149340), (144, 136895), (152, 129690), (165, 119472), (171, 115280), (176, 112005), (180, 109516), (190, 103752), (198, 99560), (209, 94320), (220, 89604), (228, 86460), (240, 82137), (262, 75240), (264, 74670), (285, 69168), (304, 64845), (330, 59736), (342, 57640), (360, 54758), (380, 51876), (393, 50160), (396, 49780), (418, 47160), (440, 44802), (456, 43230), (495, 39824), (524, 37620), (528, 37335), (570, 34584), (627, 31440), (655, 30096), (660, 29868), (684, 28820), (720, 27379), (760, 25938), (786, 25080), (792, 24890), (836, 23580), (855, 23056), (880, 22401), (912, 21615), (990, 19912), (1045, 18864), (1048, 18810), (1140, 17292), (1179, 16720), (1254, 15720), (1310, 15048), (1320, 14934), (1368, 14410), (1441, 13680), (1520, 12969), (1572, 12540), (1584, 12445), (1672, 11790), (1710, 11528), (1881, 10480), (1965, 10032), (1980, 9956), (2090, 9432), (2096, 9405), (2280, 8646), (2358, 8360), (2489, 7920), (2508, 7860), (2620, 7524), (2640, 7467), (2736, 7205), (2882, 6840), (3135, 6288), (3144, 6270), (3344, 5895), (3420, 5764), (3762, 5240), (3930, 5016), (3960, 4978), (4180, 4716), (4323, 4560)]