128581640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{292231}}^1$

素因数の和:292253

約数の個数: 32

約数和(自身を含む): 315610560

約数和(自身を除く): 187028920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 292231, 584462, 1168924, 1461155, 2337848, 2922310, 3214541, 5844620, 6429082, 11689240, 12858164, 16072705, 25716328, 32145410, 64290820, 128581640]

約数ペア:

[(1, 128581640), (2, 64290820), (4, 32145410), (5, 25716328), (8, 16072705), (10, 12858164), (11, 11689240), (20, 6429082), (22, 5844620), (40, 3214541), (44, 2922310), (55, 2337848), (88, 1461155), (110, 1168924), (220, 584462), (440, 292231)]