128997640

素因数分解:

$2^3\times 5^1\times {\mathrm{1153}}^1\times {\mathrm{2797}}^1$

素因数の和:3961

約数の個数: 32

約数和(自身を含む): 290600280

約数和(自身を除く): 161602640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1153, 2306, 2797, 4612, 5594, 5765, 9224, 11188, 11530, 13985, 22376, 23060, 27970, 46120, 55940, 111880, 3224941, 6449882, 12899764, 16124705, 25799528, 32249410, 64498820, 128997640]

約数ペア:

[(1, 128997640), (2, 64498820), (4, 32249410), (5, 25799528), (8, 16124705), (10, 12899764), (20, 6449882), (40, 3224941), (1153, 111880), (2306, 55940), (2797, 46120), (4612, 27970), (5594, 23060), (5765, 22376), (9224, 13985), (11188, 11530)]