21780434

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{49277}}^1$

素因数の和:49309

約数の個数: 16

約数和(自身を含む): 37254168

約数和(自身を除く): 15473734

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 49277, 98554, 640601, 837709, 1281202, 1675418, 10890217, 21780434]

約数ペア:

[(1, 21780434), (2, 10890217), (13, 1675418), (17, 1281202), (26, 837709), (34, 640601), (221, 98554), (442, 49277)]