20672860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3457}}^1$

素因数の和:3502

約数の個数: 48

約数和(自身を含む): 48799296

約数和(自身を除く): 28126436

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3457, 5980, 6914, 13828, 17285, 34570, 44941, 69140, 79511, 89882, 159022, 179764, 224705, 318044, 397555, 449410, 795110, 898820, 1033643, 1590220, 2067286, 4134572, 5168215, 10336430, 20672860]

約数ペア:

[(1, 20672860), (2, 10336430), (4, 5168215), (5, 4134572), (10, 2067286), (13, 1590220), (20, 1033643), (23, 898820), (26, 795110), (46, 449410), (52, 397555), (65, 318044), (92, 224705), (115, 179764), (130, 159022), (230, 89882), (260, 79511), (299, 69140), (460, 44941), (598, 34570), (1196, 17285), (1495, 13828), (2990, 6914), (3457, 5980)]