21049866

素因数分解:

$2^1\times 3^2\times {\mathrm{79}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:331

約数の個数: 48

約数和(自身を含む): 46949760

約数和(自身を除く): 25899894

約数列:

[1, 2, 3, 6, 9, 18, 79, 113, 131, 158, 226, 237, 262, 339, 393, 474, 678, 711, 786, 1017, 1179, 1422, 2034, 2358, 8927, 10349, 14803, 17854, 20698, 26781, 29606, 31047, 44409, 53562, 62094, 80343, 88818, 93141, 133227, 160686, 186282, 266454, 1169437, 2338874, 3508311, 7016622, 10524933, 21049866]

約数ペア:

[(1, 21049866), (2, 10524933), (3, 7016622), (6, 3508311), (9, 2338874), (18, 1169437), (79, 266454), (113, 186282), (131, 160686), (158, 133227), (226, 93141), (237, 88818), (262, 80343), (339, 62094), (393, 53562), (474, 44409), (678, 31047), (711, 29606), (786, 26781), (1017, 20698), (1179, 17854), (1422, 14803), (2034, 10349), (2358, 8927)]