21058468

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 37611000

約数和(自身を除く): 16552532

約数列:

[1, 2, 4, 89, 149, 178, 298, 356, 397, 596, 794, 1588, 13261, 26522, 35333, 53044, 59153, 70666, 118306, 141332, 236612, 5264617, 10529234, 21058468]

約数ペア:

[(1, 21058468), (2, 10529234), (4, 5264617), (89, 236612), (149, 141332), (178, 118306), (298, 70666), (356, 59153), (397, 53044), (596, 35333), (794, 26522), (1588, 13261)]