21665252

素因数分解:

$2^2\times 7^3\times {\mathrm{15791}}^1$

素因数の和:15816

約数の個数: 24

約数和(自身を含む): 44217600

約数和(自身を除く): 22552348

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15791, 31582, 63164, 110537, 221074, 442148, 773759, 1547518, 3095036, 5416313, 10832626, 21665252]

約数ペア:

[(1, 21665252), (2, 10832626), (4, 5416313), (7, 3095036), (14, 1547518), (28, 773759), (49, 442148), (98, 221074), (196, 110537), (343, 63164), (686, 31582), (1372, 15791)]