21815940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:397

約数の個数: 96

約数和(自身を含む): 64963584

約数和(自身を除く): 43147644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 37, 60, 62, 74, 93, 111, 124, 148, 155, 185, 186, 222, 310, 317, 370, 372, 444, 465, 555, 620, 634, 740, 930, 951, 1110, 1147, 1268, 1585, 1860, 1902, 2220, 2294, 3170, 3441, 3804, 4588, 4755, 5735, 6340, 6882, 9510, 9827, 11470, 11729, 13764, 17205, 19020, 19654, 22940, 23458, 29481, 34410, 35187, 39308, 46916, 49135, 58645, 58962, 68820, 70374, 98270, 117290, 117924, 140748, 147405, 175935, 196540, 234580, 294810, 351870, 363599, 589620, 703740, 727198, 1090797, 1454396, 1817995, 2181594, 3635990, 4363188, 5453985, 7271980, 10907970, 21815940]

約数ペア:

[(1, 21815940), (2, 10907970), (3, 7271980), (4, 5453985), (5, 4363188), (6, 3635990), (10, 2181594), (12, 1817995), (15, 1454396), (20, 1090797), (30, 727198), (31, 703740), (37, 589620), (60, 363599), (62, 351870), (74, 294810), (93, 234580), (111, 196540), (124, 175935), (148, 147405), (155, 140748), (185, 117924), (186, 117290), (222, 98270), (310, 70374), (317, 68820), (370, 58962), (372, 58645), (444, 49135), (465, 46916), (555, 39308), (620, 35187), (634, 34410), (740, 29481), (930, 23458), (951, 22940), (1110, 19654), (1147, 19020), (1268, 17205), (1585, 13764), (1860, 11729), (1902, 11470), (2220, 9827), (2294, 9510), (3170, 6882), (3441, 6340), (3804, 5735), (4588, 4755)]