18957640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36457}}^1$

素因数の和:36481

約数の個数: 32

約数和(自身を含む): 45937080

約数和(自身を除く): 26979440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 36457, 72914, 145828, 182285, 291656, 364570, 473941, 729140, 947882, 1458280, 1895764, 2369705, 3791528, 4739410, 9478820, 18957640]

約数ペア:

[(1, 18957640), (2, 9478820), (4, 4739410), (5, 3791528), (8, 2369705), (10, 1895764), (13, 1458280), (20, 947882), (26, 729140), (40, 473941), (52, 364570), (65, 291656), (104, 182285), (130, 145828), (260, 72914), (520, 36457)]