263711240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{507137}}^1$

素因数の和:507161

約数の個数: 32

約数和(自身を含む): 638993880

約数和(自身を除く): 375282640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 507137, 1014274, 2028548, 2535685, 4057096, 5071370, 6592781, 10142740, 13185562, 20285480, 26371124, 32963905, 52742248, 65927810, 131855620, 263711240]

約数ペア:

[(1, 263711240), (2, 131855620), (4, 65927810), (5, 52742248), (8, 32963905), (10, 26371124), (13, 20285480), (20, 13185562), (26, 10142740), (40, 6592781), (52, 5071370), (65, 4057096), (104, 2535685), (130, 2028548), (260, 1014274), (520, 507137)]