21534020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26261}}^1$

素因数の和:26311

約数の個数: 24

約数和(自身を含む): 46326168

約数和(自身を除く): 24792148

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26261, 52522, 105044, 131305, 262610, 525220, 1076701, 2153402, 4306804, 5383505, 10767010, 21534020]

約数ペア:

[(1, 21534020), (2, 10767010), (4, 5383505), (5, 4306804), (10, 2153402), (20, 1076701), (41, 525220), (82, 262610), (164, 131305), (205, 105044), (410, 52522), (820, 26261)]