81926162020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{132138971}}^1$

素因数の和:132139011

約数の個数: 24

約数和(自身を含む): 177594778368

約数和(自身を除く): 95668616348

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 132138971, 264277942, 528555884, 660694855, 1321389710, 2642779420, 4096308101, 8192616202, 16385232404, 20481540505, 40963081010, 81926162020]

約数ペア:

[(1, 81926162020), (2, 40963081010), (4, 20481540505), (5, 16385232404), (10, 8192616202), (20, 4096308101), (31, 2642779420), (62, 1321389710), (124, 660694855), (155, 528555884), (310, 264277942), (620, 132138971)]