21249080

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{3181}}^1$

素因数の和:3359

約数の個数: 32

約数和(自身を含む): 48111840

約数和(自身を除く): 26862760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3181, 3340, 6362, 6680, 12724, 15905, 25448, 31810, 63620, 127240, 531227, 1062454, 2124908, 2656135, 4249816, 5312270, 10624540, 21249080]

約数ペア:

[(1, 21249080), (2, 10624540), (4, 5312270), (5, 4249816), (8, 2656135), (10, 2124908), (20, 1062454), (40, 531227), (167, 127240), (334, 63620), (668, 31810), (835, 25448), (1336, 15905), (1670, 12724), (3181, 6680), (3340, 6362)]