81731130

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209567}}^1$

素因数の和:209590

約数の個数: 32

約数和(自身を含む): 211244544

約数和(自身を除く): 129513414

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 209567, 419134, 628701, 1047835, 1257402, 2095670, 2724371, 3143505, 5448742, 6287010, 8173113, 13621855, 16346226, 27243710, 40865565, 81731130]

約数ペア:

[(1, 81731130), (2, 40865565), (3, 27243710), (5, 16346226), (6, 13621855), (10, 8173113), (13, 6287010), (15, 5448742), (26, 3143505), (30, 2724371), (39, 2095670), (65, 1257402), (78, 1047835), (130, 628701), (195, 419134), (390, 209567)]