81234260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131023}}^1$

素因数の和:131063

約数の個数: 24

約数和(自身を含む): 176096256

約数和(自身を除く): 94861996

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131023, 262046, 524092, 655115, 1310230, 2620460, 4061713, 8123426, 16246852, 20308565, 40617130, 81234260]

約数ペア:

[(1, 81234260), (2, 40617130), (4, 20308565), (5, 16246852), (10, 8123426), (20, 4061713), (31, 2620460), (62, 1310230), (124, 655115), (155, 524092), (310, 262046), (620, 131023)]