21352990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{2539}}^1$

素因数の和:2604

約数の個数: 24

約数和(自身を含む): 39822120

約数和(自身を除く): 18469130

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 841, 1682, 2539, 4205, 5078, 8410, 12695, 25390, 73631, 147262, 368155, 736310, 2135299, 4270598, 10676495, 21352990]

約数ペア:

[(1, 21352990), (2, 10676495), (5, 4270598), (10, 2135299), (29, 736310), (58, 368155), (145, 147262), (290, 73631), (841, 25390), (1682, 12695), (2539, 8410), (4205, 5078)]