217707651

素因数分解:

$3^2\times 7^1\times {\mathrm{1061}}^1\times {\mathrm{3257}}^1$

素因数の和:4331

約数の個数: 24

約数和(自身を含む): 359839584

約数和(自身を除く): 142131933

約数列:

[1, 3, 7, 9, 21, 63, 1061, 3183, 3257, 7427, 9549, 9771, 22281, 22799, 29313, 66843, 68397, 205191, 3455677, 10367031, 24189739, 31101093, 72569217, 217707651]

約数ペア:

[(1, 217707651), (3, 72569217), (7, 31101093), (9, 24189739), (21, 10367031), (63, 3455677), (1061, 205191), (3183, 68397), (3257, 66843), (7427, 29313), (9549, 22799), (9771, 22281)]