64288520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{15913}}^1$

素因数の和:16025

約数の個数: 32

約数和(自身を含む): 146090520

約数和(自身を除く): 81802000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 15913, 31826, 63652, 79565, 127304, 159130, 318260, 636520, 1607213, 3214426, 6428852, 8036065, 12857704, 16072130, 32144260, 64288520]

約数ペア:

[(1, 64288520), (2, 32144260), (4, 16072130), (5, 12857704), (8, 8036065), (10, 6428852), (20, 3214426), (40, 1607213), (101, 636520), (202, 318260), (404, 159130), (505, 127304), (808, 79565), (1010, 63652), (2020, 31826), (4040, 15913)]