20784673

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{487}}^1$

素因数の和:581

約数の個数: 24

約数和(自身を含む): 26480832

約数和(自身を除く): 5696159

約数列:

[1, 7, 13, 49, 67, 91, 469, 487, 637, 871, 3283, 3409, 6097, 6331, 23863, 32629, 42679, 44317, 228403, 310219, 424177, 1598821, 2969239, 20784673]

約数ペア:

[(1, 20784673), (7, 2969239), (13, 1598821), (49, 424177), (67, 310219), (91, 228403), (469, 44317), (487, 42679), (637, 32629), (871, 23863), (3283, 6331), (3409, 6097)]