21218522

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18979}}^1$

素因数の和:19037

約数の個数: 16

約数和(自身を含む): 35075040

約数和(自身を除く): 13856518

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 18979, 37958, 246727, 493454, 816097, 1632194, 10609261, 21218522]

約数ペア:

[(1, 21218522), (2, 10609261), (13, 1632194), (26, 816097), (43, 493454), (86, 246727), (559, 37958), (1118, 18979)]