21957416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{211129}}^1$

素因数の和:211148

約数の個数: 16

約数和(自身を含む): 44337300

約数和(自身を除く): 22379884

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 211129, 422258, 844516, 1689032, 2744677, 5489354, 10978708, 21957416]

約数ペア:

[(1, 21957416), (2, 10978708), (4, 5489354), (8, 2744677), (13, 1689032), (26, 844516), (52, 422258), (104, 211129)]