20685992

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{461}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19230808

約数列:

[1, 2, 4, 8, 71, 79, 142, 158, 284, 316, 461, 568, 632, 922, 1844, 3688, 5609, 11218, 22436, 32731, 36419, 44872, 65462, 72838, 130924, 145676, 261848, 291352, 2585749, 5171498, 10342996, 20685992]

約数ペア:

[(1, 20685992), (2, 10342996), (4, 5171498), (8, 2585749), (71, 291352), (79, 261848), (142, 145676), (158, 130924), (284, 72838), (316, 65462), (461, 44872), (568, 36419), (632, 32731), (922, 22436), (1844, 11218), (3688, 5609)]