128836160

素因数分解:

$2^6\times 5^1\times {\mathrm{402613}}^1$

素因数の和:402630

約数の個数: 28

約数和(自身を含む): 306791868

約数和(自身を除く): 177955708

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 402613, 805226, 1610452, 2013065, 3220904, 4026130, 6441808, 8052260, 12883616, 16104520, 25767232, 32209040, 64418080, 128836160]

約数ペア:

[(1, 128836160), (2, 64418080), (4, 32209040), (5, 25767232), (8, 16104520), (10, 12883616), (16, 8052260), (20, 6441808), (32, 4026130), (40, 3220904), (64, 2013065), (80, 1610452), (160, 805226), (320, 402613)]