21205291216

素因数分解:

$2^4\times {\mathrm{223}}^1\times {\mathrm{5943187}}^1$

素因数の和:5943418

約数の個数: 20

約数和(自身を含む): 41269497472

約数和(自身を除く): 20064206256

約数列:

[1, 2, 4, 8, 16, 223, 446, 892, 1784, 3568, 5943187, 11886374, 23772748, 47545496, 95090992, 1325330701, 2650661402, 5301322804, 10602645608, 21205291216]

約数ペア:

[(1, 21205291216), (2, 10602645608), (4, 5301322804), (8, 2650661402), (16, 1325330701), (223, 95090992), (446, 47545496), (892, 23772748), (1784, 11886374), (3568, 5943187)]