20928080

素因数分解:

$2^4\times 5^1\times {\mathrm{261601}}^1$

素因数の和:261614

約数の個数: 20

約数和(自身を含む): 48657972

約数和(自身を除く): 27729892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261601, 523202, 1046404, 1308005, 2092808, 2616010, 4185616, 5232020, 10464040, 20928080]

約数ペア:

[(1, 20928080), (2, 10464040), (4, 5232020), (5, 4185616), (8, 2616010), (10, 2092808), (16, 1308005), (20, 1046404), (40, 523202), (80, 261601)]