21985665

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3637}}^1$

素因数の和:3689

約数の個数: 32

約数和(自身を含む): 39115776

約数和(自身を除く): 17130111

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 3637, 6045, 10911, 18185, 47281, 54555, 112747, 141843, 236405, 338241, 563735, 709215, 1465711, 1691205, 4397133, 7328555, 21985665]

約数ペア:

[(1, 21985665), (3, 7328555), (5, 4397133), (13, 1691205), (15, 1465711), (31, 709215), (39, 563735), (65, 338241), (93, 236405), (155, 141843), (195, 112747), (403, 54555), (465, 47281), (1209, 18185), (2015, 10911), (3637, 6045)]