21551621

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1471}}^1$

素因数の和:1521

約数の個数: 24

約数和(自身を含む): 28191744

約数和(自身を除く): 6640123

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1471, 2093, 10297, 14651, 19123, 33833, 72079, 133861, 236831, 439829, 937027, 1657817, 3078803, 21551621]

約数ペア:

[(1, 21551621), (7, 3078803), (13, 1657817), (23, 937027), (49, 439829), (91, 236831), (161, 133861), (299, 72079), (637, 33833), (1127, 19123), (1471, 14651), (2093, 10297)]