19881080

素因数分解:

$2^3\times 5^1\times {\mathrm{601}}^1\times {\mathrm{827}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 44861040

約数和(自身を除く): 24979960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 601, 827, 1202, 1654, 2404, 3005, 3308, 4135, 4808, 6010, 6616, 8270, 12020, 16540, 24040, 33080, 497027, 994054, 1988108, 2485135, 3976216, 4970270, 9940540, 19881080]

約数ペア:

[(1, 19881080), (2, 9940540), (4, 4970270), (5, 3976216), (8, 2485135), (10, 1988108), (20, 994054), (40, 497027), (601, 33080), (827, 24040), (1202, 16540), (1654, 12020), (2404, 8270), (3005, 6616), (3308, 6010), (4135, 4808)]