21398772

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12829}}^1$

素因数の和:12975

約数の個数: 24

約数和(自身を含む): 50293600

約数和(自身を除く): 28894828

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12829, 25658, 38487, 51316, 76974, 153948, 1783231, 3566462, 5349693, 7132924, 10699386, 21398772]

約数ペア:

[(1, 21398772), (2, 10699386), (3, 7132924), (4, 5349693), (6, 3566462), (12, 1783231), (139, 153948), (278, 76974), (417, 51316), (556, 38487), (834, 25658), (1668, 12829)]