21791077640

素因数分解:

$2^3\times 5^1\times {\mathrm{859}}^1\times {\mathrm{634199}}^1$

素因数の和:635069

約数の個数: 32

約数和(自身を含む): 49087080000

約数和(自身を除く): 27296002360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 859, 1718, 3436, 4295, 6872, 8590, 17180, 34360, 634199, 1268398, 2536796, 3170995, 5073592, 6341990, 12683980, 25367960, 544776941, 1089553882, 2179107764, 2723884705, 4358215528, 5447769410, 10895538820, 21791077640]

約数ペア:

[(1, 21791077640), (2, 10895538820), (4, 5447769410), (5, 4358215528), (8, 2723884705), (10, 2179107764), (20, 1089553882), (40, 544776941), (859, 25367960), (1718, 12683980), (3436, 6341990), (4295, 5073592), (6872, 3170995), (8590, 2536796), (17180, 1268398), (34360, 634199)]