21898268

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12821}}^1$

素因数の和:12893

約数の個数: 24

約数和(自身を含む): 44517984

約数和(自身を除く): 22619716

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12821, 25642, 51284, 89747, 179494, 358988, 782081, 1564162, 3128324, 5474567, 10949134, 21898268]

約数ペア:

[(1, 21898268), (2, 10949134), (4, 5474567), (7, 3128324), (14, 1564162), (28, 782081), (61, 358988), (122, 179494), (244, 89747), (427, 51284), (854, 25642), (1708, 12821)]