21321760

素因数分解:

$2^5\times 5^1\times {\mathrm{133261}}^1$

素因数の和:133276

約数の個数: 24

約数和(自身を含む): 50373036

約数和(自身を除く): 29051276

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133261, 266522, 533044, 666305, 1066088, 1332610, 2132176, 2665220, 4264352, 5330440, 10660880, 21321760]

約数ペア:

[(1, 21321760), (2, 10660880), (4, 5330440), (5, 4264352), (8, 2665220), (10, 2132176), (16, 1332610), (20, 1066088), (32, 666305), (40, 533044), (80, 266522), (160, 133261)]