21055900

素因数分解:

$2^2\times 5^2\times {\mathrm{239}}^1\times {\mathrm{881}}^1$

素因数の和:1134

約数の個数: 36

約数和(自身を含む): 45934560

約数和(自身を除く): 24878660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 239, 478, 881, 956, 1195, 1762, 2390, 3524, 4405, 4780, 5975, 8810, 11950, 17620, 22025, 23900, 44050, 88100, 210559, 421118, 842236, 1052795, 2105590, 4211180, 5263975, 10527950, 21055900]

約数ペア:

[(1, 21055900), (2, 10527950), (4, 5263975), (5, 4211180), (10, 2105590), (20, 1052795), (25, 842236), (50, 421118), (100, 210559), (239, 88100), (478, 44050), (881, 23900), (956, 22025), (1195, 17620), (1762, 11950), (2390, 8810), (3524, 5975), (4405, 4780)]