280970391

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{757}}^1$

素因数の和:1111

約数の個数: 32

約数和(自身を含む): 418367488

約数和(自身を除く): 137397097

約数列:

[1, 3, 13, 31, 39, 93, 307, 403, 757, 921, 1209, 2271, 3991, 9517, 9841, 11973, 23467, 28551, 29523, 70401, 123721, 232399, 305071, 371163, 697197, 915213, 3021187, 7204369, 9063561, 21613107, 93656797, 280970391]

約数ペア:

[(1, 280970391), (3, 93656797), (13, 21613107), (31, 9063561), (39, 7204369), (93, 3021187), (307, 915213), (403, 697197), (757, 371163), (921, 305071), (1209, 232399), (2271, 123721), (3991, 70401), (9517, 29523), (9841, 28551), (11973, 23467)]