221963540

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{79843}}^1$

素因数の和:79991

約数の個数: 24

約数和(自身を含む): 469482720

約数和(自身を除く): 247519180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 79843, 159686, 319372, 399215, 798430, 1596860, 11098177, 22196354, 44392708, 55490885, 110981770, 221963540]

約数ペア:

[(1, 221963540), (2, 110981770), (4, 55490885), (5, 44392708), (10, 22196354), (20, 11098177), (139, 1596860), (278, 798430), (556, 399215), (695, 319372), (1390, 159686), (2780, 79843)]