21461072

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78901}}^1$

素因数の和:78926

約数の個数: 20

約数和(自身を含む): 44027316

約数和(自身を除く): 22566244

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78901, 157802, 315604, 631208, 1262416, 1341317, 2682634, 5365268, 10730536, 21461072]

約数ペア:

[(1, 21461072), (2, 10730536), (4, 5365268), (8, 2682634), (16, 1341317), (17, 1262416), (34, 631208), (68, 315604), (136, 157802), (272, 78901)]