81119960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{69931}}^1$

素因数の和:69971

約数の個数: 32

約数和(自身を含む): 188816400

約数和(自身を除く): 107696440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 69931, 139862, 279724, 349655, 559448, 699310, 1398620, 2027999, 2797240, 4055998, 8111996, 10139995, 16223992, 20279990, 40559980, 81119960]

約数ペア:

[(1, 81119960), (2, 40559980), (4, 20279990), (5, 16223992), (8, 10139995), (10, 8111996), (20, 4055998), (29, 2797240), (40, 2027999), (58, 1398620), (116, 699310), (145, 559448), (232, 349655), (290, 279724), (580, 139862), (1160, 69931)]