21656708

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 21090556

約数列:

[1, 2, 4, 17, 23, 34, 46, 61, 68, 92, 122, 227, 244, 391, 454, 782, 908, 1037, 1403, 1564, 2074, 2806, 3859, 4148, 5221, 5612, 7718, 10442, 13847, 15436, 20884, 23851, 27694, 47702, 55388, 88757, 95404, 177514, 235399, 318481, 355028, 470798, 636962, 941596, 1273924, 5414177, 10828354, 21656708]

約数ペア:

[(1, 21656708), (2, 10828354), (4, 5414177), (17, 1273924), (23, 941596), (34, 636962), (46, 470798), (61, 355028), (68, 318481), (92, 235399), (122, 177514), (227, 95404), (244, 88757), (391, 55388), (454, 47702), (782, 27694), (908, 23851), (1037, 20884), (1403, 15436), (1564, 13847), (2074, 10442), (2806, 7718), (3859, 5612), (4148, 5221)]