21365740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97117}}^1$

素因数の和:97137

約数の個数: 24

約数和(自身を含む): 48947472

約数和(自身を除く): 27581732

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 97117, 194234, 388468, 485585, 971170, 1068287, 1942340, 2136574, 4273148, 5341435, 10682870, 21365740]

約数ペア:

[(1, 21365740), (2, 10682870), (4, 5341435), (5, 4273148), (10, 2136574), (11, 1942340), (20, 1068287), (22, 971170), (44, 485585), (55, 388468), (110, 194234), (220, 97117)]