81635940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{7687}}^1$

素因数の和:7761

約数の個数: 72

約数和(自身を含む): 251858880

約数和(自身を除く): 170222940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 2124, 2655, 3540, 5310, 7687, 10620, 15374, 23061, 30748, 38435, 46122, 69183, 76870, 92244, 115305, 138366, 153740, 230610, 276732, 345915, 453533, 461220, 691830, 907066, 1360599, 1383660, 1814132, 2267665, 2721198, 4081797, 4535330, 5442396, 6802995, 8163594, 9070660, 13605990, 16327188, 20408985, 27211980, 40817970, 81635940]

約数ペア:

[(1, 81635940), (2, 40817970), (3, 27211980), (4, 20408985), (5, 16327188), (6, 13605990), (9, 9070660), (10, 8163594), (12, 6802995), (15, 5442396), (18, 4535330), (20, 4081797), (30, 2721198), (36, 2267665), (45, 1814132), (59, 1383660), (60, 1360599), (90, 907066), (118, 691830), (177, 461220), (180, 453533), (236, 345915), (295, 276732), (354, 230610), (531, 153740), (590, 138366), (708, 115305), (885, 92244), (1062, 76870), (1180, 69183), (1770, 46122), (2124, 38435), (2655, 30748), (3540, 23061), (5310, 15374), (7687, 10620)]