278984901

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{2543}}^1$

素因数の和:2685

約数の個数: 32

約数和(自身を含む): 418844160

約数和(自身を除く): 139859259

約数列:

[1, 3, 13, 29, 39, 87, 97, 291, 377, 1131, 1261, 2543, 2813, 3783, 7629, 8439, 33059, 36569, 73747, 99177, 109707, 221241, 246671, 740013, 958711, 2876133, 3206723, 7153459, 9620169, 21460377, 92994967, 278984901]

約数ペア:

[(1, 278984901), (3, 92994967), (13, 21460377), (29, 9620169), (39, 7153459), (87, 3206723), (97, 2876133), (291, 958711), (377, 740013), (1131, 246671), (1261, 221241), (2543, 109707), (2813, 99177), (3783, 73747), (7629, 36569), (8439, 33059)]