20215100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6521}}^1$

素因数の和:6566

約数の個数: 36

約数和(自身を含む): 45288768

約数和(自身を除く): 25073668

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6521, 13042, 26084, 32605, 65210, 130420, 163025, 202151, 326050, 404302, 652100, 808604, 1010755, 2021510, 4043020, 5053775, 10107550, 20215100]

約数ペア:

[(1, 20215100), (2, 10107550), (4, 5053775), (5, 4043020), (10, 2021510), (20, 1010755), (25, 808604), (31, 652100), (50, 404302), (62, 326050), (100, 202151), (124, 163025), (155, 130420), (310, 65210), (620, 32605), (775, 26084), (1550, 13042), (3100, 6521)]