278640406

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{887}}^1$

素因数の和:1140

約数の個数: 32

約数和(自身を含む): 464175360

約数和(自身を除く): 185534954

約数列:

[1, 2, 11, 22, 109, 131, 218, 262, 887, 1199, 1441, 1774, 2398, 2882, 9757, 14279, 19514, 28558, 96683, 116197, 157069, 193366, 232394, 314138, 1063513, 1278167, 2127026, 2556334, 12665473, 25330946, 139320203, 278640406]

約数ペア:

[(1, 278640406), (2, 139320203), (11, 25330946), (22, 12665473), (109, 2556334), (131, 2127026), (218, 1278167), (262, 1063513), (887, 314138), (1199, 232394), (1441, 193366), (1774, 157069), (2398, 116197), (2882, 96683), (9757, 28558), (14279, 19514)]