21022040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40427}}^1$

素因数の和:40451

約数の個数: 32

約数和(自身を含む): 50939280

約数和(自身を除く): 29917240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40427, 80854, 161708, 202135, 323416, 404270, 525551, 808540, 1051102, 1617080, 2102204, 2627755, 4204408, 5255510, 10511020, 21022040]

約数ペア:

[(1, 21022040), (2, 10511020), (4, 5255510), (5, 4204408), (8, 2627755), (10, 2102204), (13, 1617080), (20, 1051102), (26, 808540), (40, 525551), (52, 404270), (65, 323416), (104, 202135), (130, 161708), (260, 80854), (520, 40427)]