64704440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{52181}}^1$

素因数の和:52223

約数の個数: 32

約数和(自身を含む): 150284160

約数和(自身を除く): 85579720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 52181, 104362, 208724, 260905, 417448, 521810, 1043620, 1617611, 2087240, 3235222, 6470444, 8088055, 12940888, 16176110, 32352220, 64704440]

約数ペア:

[(1, 64704440), (2, 32352220), (4, 16176110), (5, 12940888), (8, 8088055), (10, 6470444), (20, 3235222), (31, 2087240), (40, 1617611), (62, 1043620), (124, 521810), (155, 417448), (248, 260905), (310, 208724), (620, 104362), (1240, 52181)]