20660432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1399}}^1$

素因数の和:1491

約数の個数: 40

約数和(自身を含む): 43747200

約数和(自身を除く): 23086768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1399, 1846, 2798, 3692, 5596, 7384, 11192, 14768, 18187, 22384, 36374, 72748, 99329, 145496, 198658, 290992, 397316, 794632, 1291277, 1589264, 2582554, 5165108, 10330216, 20660432]

約数ペア:

[(1, 20660432), (2, 10330216), (4, 5165108), (8, 2582554), (13, 1589264), (16, 1291277), (26, 794632), (52, 397316), (71, 290992), (104, 198658), (142, 145496), (208, 99329), (284, 72748), (568, 36374), (923, 22384), (1136, 18187), (1399, 14768), (1846, 11192), (2798, 7384), (3692, 5596)]