21840400

素因数分解:

$2^4\times 5^2\times {\mathrm{54601}}^1$

素因数の和:54619

約数の個数: 30

約数和(自身を含む): 52472522

約数和(自身を除く): 30632122

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54601, 109202, 218404, 273005, 436808, 546010, 873616, 1092020, 1365025, 2184040, 2730050, 4368080, 5460100, 10920200, 21840400]

約数ペア:

[(1, 21840400), (2, 10920200), (4, 5460100), (5, 4368080), (8, 2730050), (10, 2184040), (16, 1365025), (20, 1092020), (25, 873616), (40, 546010), (50, 436808), (80, 273005), (100, 218404), (200, 109202), (400, 54601)]