256979163

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{857}}^1$

素因数の和:1107

約数の個数: 32

約数和(自身を含む): 398661120

約数和(自身を除く): 141681957

約数列:

[1, 3, 7, 21, 109, 131, 327, 393, 763, 857, 917, 2289, 2571, 2751, 5999, 14279, 17997, 42837, 93413, 99953, 112267, 280239, 299859, 336801, 653891, 785869, 1961673, 2357607, 12237103, 36711309, 85659721, 256979163]

約数ペア:

[(1, 256979163), (3, 85659721), (7, 36711309), (21, 12237103), (109, 2357607), (131, 1961673), (327, 785869), (393, 653891), (763, 336801), (857, 299859), (917, 280239), (2289, 112267), (2571, 99953), (2751, 93413), (5999, 42837), (14279, 17997)]