81736590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209581}}^1$

素因数の和:209604

約数の個数: 32

約数和(自身を含む): 211258656

約数和(自身を除く): 129522066

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 209581, 419162, 628743, 1047905, 1257486, 2095810, 2724553, 3143715, 5449106, 6287430, 8173659, 13622765, 16347318, 27245530, 40868295, 81736590]

約数ペア:

[(1, 81736590), (2, 40868295), (3, 27245530), (5, 16347318), (6, 13622765), (10, 8173659), (13, 6287430), (15, 5449106), (26, 3143715), (30, 2724553), (39, 2095810), (65, 1257486), (78, 1047905), (130, 628743), (195, 419162), (390, 209581)]