20457896

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 39528000

約数和(自身を除く): 19070104

約数列:

[1, 2, 4, 8, 59, 89, 118, 178, 236, 356, 472, 487, 712, 974, 1948, 3896, 5251, 10502, 21004, 28733, 42008, 43343, 57466, 86686, 114932, 173372, 229864, 346744, 2557237, 5114474, 10228948, 20457896]

約数ペア:

[(1, 20457896), (2, 10228948), (4, 5114474), (8, 2557237), (59, 346744), (89, 229864), (118, 173372), (178, 114932), (236, 86686), (356, 57466), (472, 43343), (487, 42008), (712, 28733), (974, 21004), (1948, 10502), (3896, 5251)]