21394210

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52181}}^1$

素因数の和:52229

約数の個数: 16

約数和(自身を含む): 39449592

約数和(自身を除く): 18055382

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52181, 104362, 260905, 521810, 2139421, 4278842, 10697105, 21394210]

約数ペア:

[(1, 21394210), (2, 10697105), (5, 4278842), (10, 2139421), (41, 521810), (82, 260905), (205, 104362), (410, 52181)]