220344680

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{20327}}^1$

素因数の和:20609

約数の個数: 32

約数和(自身を含む): 497629440

約数和(自身を除く): 277284760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 10840, 20327, 40654, 81308, 101635, 162616, 203270, 406540, 813080, 5508617, 11017234, 22034468, 27543085, 44068936, 55086170, 110172340, 220344680]

約数ペア:

[(1, 220344680), (2, 110172340), (4, 55086170), (5, 44068936), (8, 27543085), (10, 22034468), (20, 11017234), (40, 5508617), (271, 813080), (542, 406540), (1084, 203270), (1355, 162616), (2168, 101635), (2710, 81308), (5420, 40654), (10840, 20327)]