21816400

素因数分解:

$2^4\times 5^2\times {\mathrm{54541}}^1$

素因数の和:54559

約数の個数: 30

約数和(自身を含む): 52414862

約数和(自身を除く): 30598462

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54541, 109082, 218164, 272705, 436328, 545410, 872656, 1090820, 1363525, 2181640, 2727050, 4363280, 5454100, 10908200, 21816400]

約数ペア:

[(1, 21816400), (2, 10908200), (4, 5454100), (5, 4363280), (8, 2727050), (10, 2181640), (16, 1363525), (20, 1090820), (25, 872656), (40, 545410), (50, 436328), (80, 272705), (100, 218164), (200, 109082), (400, 54541)]