20165395220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{129581}}^1$

素因数の和:129872

約数の個数: 48

約数和(自身を含む): 43887868416

約数和(自身を除く): 23722473196

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 251, 310, 502, 620, 1004, 1255, 2510, 5020, 7781, 15562, 31124, 38905, 77810, 129581, 155620, 259162, 518324, 647905, 1295810, 2591620, 4017011, 8034022, 16068044, 20085055, 32524831, 40170110, 65049662, 80340220, 130099324, 162624155, 325248310, 650496620, 1008269761, 2016539522, 4033079044, 5041348805, 10082697610, 20165395220]

約数ペア:

[(1, 20165395220), (2, 10082697610), (4, 5041348805), (5, 4033079044), (10, 2016539522), (20, 1008269761), (31, 650496620), (62, 325248310), (124, 162624155), (155, 130099324), (251, 80340220), (310, 65049662), (502, 40170110), (620, 32524831), (1004, 20085055), (1255, 16068044), (2510, 8034022), (5020, 4017011), (7781, 2591620), (15562, 1295810), (31124, 647905), (38905, 518324), (77810, 259162), (129581, 155620)]