21175252

素因数分解:

$2^2\times 7^2\times {\mathrm{108037}}^1$

素因数の和:108055

約数の個数: 18

約数和(自身を含む): 43107162

約数和(自身を除く): 21931910

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 108037, 216074, 432148, 756259, 1512518, 3025036, 5293813, 10587626, 21175252]

約数ペア:

[(1, 21175252), (2, 10587626), (4, 5293813), (7, 3025036), (14, 1512518), (28, 756259), (49, 432148), (98, 216074), (196, 108037)]