21473145

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20747}}^1$

素因数の和:20781

約数の個数: 24

約数和(自身を含む): 38840256

約数和(自身を除く): 17367111

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20747, 62241, 103735, 186723, 311205, 477181, 933615, 1431543, 2385905, 4294629, 7157715, 21473145]

約数ペア:

[(1, 21473145), (3, 7157715), (5, 4294629), (9, 2385905), (15, 1431543), (23, 933615), (45, 477181), (69, 311205), (115, 186723), (207, 103735), (345, 62241), (1035, 20747)]