256390953

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{4451}}^1$

素因数の和:4685

約数の個数: 32

約数和(自身を含む): 422833152

約数和(自身を除く): 166442199

約数列:

[1, 3, 7, 13, 21, 39, 91, 211, 273, 633, 1477, 2743, 4431, 4451, 8229, 13353, 19201, 31157, 57603, 57863, 93471, 173589, 405041, 939161, 1215123, 2817483, 6574127, 12209093, 19722381, 36627279, 85463651, 256390953]

約数ペア:

[(1, 256390953), (3, 85463651), (7, 36627279), (13, 19722381), (21, 12209093), (39, 6574127), (91, 2817483), (211, 1215123), (273, 939161), (633, 405041), (1477, 173589), (2743, 93471), (4431, 57863), (4451, 57603), (8229, 31157), (13353, 19201)]