21565704

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{20897}}^1$

素因数の和:20949

約数の個数: 32

約数和(自身を含む): 55170720

約数和(自身を除く): 33605016

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 20897, 41794, 62691, 83588, 125382, 167176, 250764, 501528, 898571, 1797142, 2695713, 3594284, 5391426, 7188568, 10782852, 21565704]

約数ペア:

[(1, 21565704), (2, 10782852), (3, 7188568), (4, 5391426), (6, 3594284), (8, 2695713), (12, 1797142), (24, 898571), (43, 501528), (86, 250764), (129, 167176), (172, 125382), (258, 83588), (344, 62691), (516, 41794), (1032, 20897)]