28218365

素因数分解:

$5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{773}}^1$

素因数の和:941

約数の個数: 24

約数和(自身を含む): 39706200

約数和(自身を除く): 11487835

約数列:

[1, 5, 7, 35, 49, 149, 245, 745, 773, 1043, 3865, 5215, 5411, 7301, 27055, 36505, 37877, 115177, 189385, 575885, 806239, 4031195, 5643673, 28218365]

約数ペア:

[(1, 28218365), (5, 5643673), (7, 4031195), (35, 806239), (49, 575885), (149, 189385), (245, 115177), (745, 37877), (773, 36505), (1043, 27055), (3865, 7301), (5215, 5411)]