80389640

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{11617}}^1$

素因数の和:11801

約数の個数: 32

約数和(自身を含む): 181937880

約数和(自身を除く): 101548240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 11617, 23234, 46468, 58085, 92936, 116170, 232340, 464680, 2009741, 4019482, 8038964, 10048705, 16077928, 20097410, 40194820, 80389640]

約数ペア:

[(1, 80389640), (2, 40194820), (4, 20097410), (5, 16077928), (8, 10048705), (10, 8038964), (20, 4019482), (40, 2009741), (173, 464680), (346, 232340), (692, 116170), (865, 92936), (1384, 58085), (1730, 46468), (3460, 23234), (6920, 11617)]