20780792

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19136008

約数列:

[1, 2, 4, 8, 79, 131, 158, 251, 262, 316, 502, 524, 632, 1004, 1048, 2008, 10349, 19829, 20698, 32881, 39658, 41396, 65762, 79316, 82792, 131524, 158632, 263048, 2597599, 5195198, 10390396, 20780792]

約数ペア:

[(1, 20780792), (2, 10390396), (4, 5195198), (8, 2597599), (79, 263048), (131, 158632), (158, 131524), (251, 82792), (262, 79316), (316, 65762), (502, 41396), (524, 39658), (632, 32881), (1004, 20698), (1048, 19829), (2008, 10349)]