21354480

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 240

約数和(自身を含む): 86661120

約数和(自身を除く): 65306640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 48, 56, 57, 60, 63, 70, 72, 76, 80, 84, 90, 95, 105, 112, 114, 120, 126, 133, 140, 144, 152, 168, 171, 180, 190, 210, 223, 228, 240, 252, 266, 280, 285, 304, 315, 336, 342, 360, 380, 399, 420, 446, 456, 504, 532, 560, 570, 630, 665, 669, 684, 720, 760, 798, 840, 855, 892, 912, 1008, 1064, 1115, 1140, 1197, 1260, 1330, 1338, 1368, 1520, 1561, 1596, 1680, 1710, 1784, 1995, 2007, 2128, 2230, 2280, 2394, 2520, 2660, 2676, 2736, 3122, 3192, 3345, 3420, 3568, 3990, 4014, 4237, 4460, 4560, 4683, 4788, 5040, 5320, 5352, 5985, 6244, 6384, 6690, 6840, 7805, 7980, 8028, 8474, 8920, 9366, 9576, 10035, 10640, 10704, 11970, 12488, 12711, 13380, 13680, 14049, 15610, 15960, 16056, 16948, 17840, 18732, 19152, 20070, 21185, 23415, 23940, 24976, 25422, 26760, 28098, 29659, 31220, 31920, 32112, 33896, 37464, 38133, 40140, 42370, 46830, 47880, 50844, 53520, 56196, 59318, 62440, 63555, 67792, 70245, 74928, 76266, 80280, 84740, 88977, 93660, 95760, 101688, 112392, 118636, 124880, 127110, 140490, 148295, 152532, 160560, 169480, 177954, 187320, 190665, 203376, 224784, 237272, 254220, 266931, 280980, 296590, 305064, 338960, 355908, 374640, 381330, 444885, 474544, 508440, 533862, 561960, 593180, 610128, 711816, 762660, 889770, 1016880, 1067724, 1123920, 1186360, 1334655, 1423632, 1525320, 1779540, 2135448, 2372720, 2669310, 3050640, 3559080, 4270896, 5338620, 7118160, 10677240, 21354480]

約数ペア:

[(1, 21354480), (2, 10677240), (3, 7118160), (4, 5338620), (5, 4270896), (6, 3559080), (7, 3050640), (8, 2669310), (9, 2372720), (10, 2135448), (12, 1779540), (14, 1525320), (15, 1423632), (16, 1334655), (18, 1186360), (19, 1123920), (20, 1067724), (21, 1016880), (24, 889770), (28, 762660), (30, 711816), (35, 610128), (36, 593180), (38, 561960), (40, 533862), (42, 508440), (45, 474544), (48, 444885), (56, 381330), (57, 374640), (60, 355908), (63, 338960), (70, 305064), (72, 296590), (76, 280980), (80, 266931), (84, 254220), (90, 237272), (95, 224784), (105, 203376), (112, 190665), (114, 187320), (120, 177954), (126, 169480), (133, 160560), (140, 152532), (144, 148295), (152, 140490), (168, 127110), (171, 124880), (180, 118636), (190, 112392), (210, 101688), (223, 95760), (228, 93660), (240, 88977), (252, 84740), (266, 80280), (280, 76266), (285, 74928), (304, 70245), (315, 67792), (336, 63555), (342, 62440), (360, 59318), (380, 56196), (399, 53520), (420, 50844), (446, 47880), (456, 46830), (504, 42370), (532, 40140), (560, 38133), (570, 37464), (630, 33896), (665, 32112), (669, 31920), (684, 31220), (720, 29659), (760, 28098), (798, 26760), (840, 25422), (855, 24976), (892, 23940), (912, 23415), (1008, 21185), (1064, 20070), (1115, 19152), (1140, 18732), (1197, 17840), (1260, 16948), (1330, 16056), (1338, 15960), (1368, 15610), (1520, 14049), (1561, 13680), (1596, 13380), (1680, 12711), (1710, 12488), (1784, 11970), (1995, 10704), (2007, 10640), (2128, 10035), (2230, 9576), (2280, 9366), (2394, 8920), (2520, 8474), (2660, 8028), (2676, 7980), (2736, 7805), (3122, 6840), (3192, 6690), (3345, 6384), (3420, 6244), (3568, 5985), (3990, 5352), (4014, 5320), (4237, 5040), (4460, 4788), (4560, 4683)]