20496550

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5189}}^1$

素因数の和:5280

約数の個数: 24

約数和(自身を含む): 38613600

約数和(自身を除く): 18117050

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5189, 10378, 25945, 51890, 129725, 259450, 409931, 819862, 2049655, 4099310, 10248275, 20496550]

約数ペア:

[(1, 20496550), (2, 10248275), (5, 4099310), (10, 2049655), (25, 819862), (50, 409931), (79, 259450), (158, 129725), (395, 51890), (790, 25945), (1975, 10378), (3950, 5189)]