21968055

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11353}}^1$

素因数の和:11407

約数の個数: 24

約数和(自身を含む): 38966928

約数和(自身を除く): 16998873

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 11353, 34059, 56765, 102177, 170295, 488179, 510885, 1464537, 2440895, 4393611, 7322685, 21968055]

約数ペア:

[(1, 21968055), (3, 7322685), (5, 4393611), (9, 2440895), (15, 1464537), (43, 510885), (45, 488179), (129, 170295), (215, 102177), (387, 56765), (645, 34059), (1935, 11353)]