21245036

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{312427}}^1$

素因数の和:312448

約数の個数: 12

約数和(自身を含む): 39365928

約数和(自身を除く): 18120892

約数列:

[1, 2, 4, 17, 34, 68, 312427, 624854, 1249708, 5311259, 10622518, 21245036]

約数ペア:

[(1, 21245036), (2, 10622518), (4, 5311259), (17, 1249708), (34, 624854), (68, 312427)]