81515740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131477}}^1$

素因数の和:131517

約数の個数: 24

約数和(自身を含む): 176706432

約数和(自身を除く): 95190692

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131477, 262954, 525908, 657385, 1314770, 2629540, 4075787, 8151574, 16303148, 20378935, 40757870, 81515740]

約数ペア:

[(1, 81515740), (2, 40757870), (4, 20378935), (5, 16303148), (10, 8151574), (20, 4075787), (31, 2629540), (62, 1314770), (124, 657385), (155, 525908), (310, 262954), (620, 131477)]