21044900

素因数分解:

$2^2\times 5^2\times {\mathrm{389}}^1\times {\mathrm{541}}^1$

素因数の和:944

約数の個数: 36

約数和(自身を含む): 45869460

約数和(自身を除く): 24824560

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 389, 541, 778, 1082, 1556, 1945, 2164, 2705, 3890, 5410, 7780, 9725, 10820, 13525, 19450, 27050, 38900, 54100, 210449, 420898, 841796, 1052245, 2104490, 4208980, 5261225, 10522450, 21044900]

約数ペア:

[(1, 21044900), (2, 10522450), (4, 5261225), (5, 4208980), (10, 2104490), (20, 1052245), (25, 841796), (50, 420898), (100, 210449), (389, 54100), (541, 38900), (778, 27050), (1082, 19450), (1556, 13525), (1945, 10820), (2164, 9725), (2705, 7780), (3890, 5410)]