81526120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156781}}^1$

素因数の和:156805

約数の個数: 32

約数和(自身を含む): 197545320

約数和(自身を除く): 116019200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 156781, 313562, 627124, 783905, 1254248, 1567810, 2038153, 3135620, 4076306, 6271240, 8152612, 10190765, 16305224, 20381530, 40763060, 81526120]

約数ペア:

[(1, 81526120), (2, 40763060), (4, 20381530), (5, 16305224), (8, 10190765), (10, 8152612), (13, 6271240), (20, 4076306), (26, 3135620), (40, 2038153), (52, 1567810), (65, 1254248), (104, 783905), (130, 627124), (260, 313562), (520, 156781)]