21881421

素因数分解:

$3^5\times {\mathrm{53}}^1\times {\mathrm{1699}}^1$

素因数の和:1767

約数の個数: 24

約数和(自身を含む): 33415200

約数和(自身を除く): 11533779

約数列:

[1, 3, 9, 27, 53, 81, 159, 243, 477, 1431, 1699, 4293, 5097, 12879, 15291, 45873, 90047, 137619, 270141, 412857, 810423, 2431269, 7293807, 21881421]

約数ペア:

[(1, 21881421), (3, 7293807), (9, 2431269), (27, 810423), (53, 412857), (81, 270141), (159, 137619), (243, 90047), (477, 45873), (1431, 15291), (1699, 12879), (4293, 5097)]