81731260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{314351}}^1$

素因数の和:314373

約数の個数: 24

約数和(自身を含む): 184838976

約数和(自身を除く): 103107716

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 314351, 628702, 1257404, 1571755, 3143510, 4086563, 6287020, 8173126, 16346252, 20432815, 40865630, 81731260]

約数ペア:

[(1, 81731260), (2, 40865630), (4, 20432815), (5, 16346252), (10, 8173126), (13, 6287020), (20, 4086563), (26, 3143510), (52, 1571755), (65, 1257404), (130, 628702), (260, 314351)]