19195990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1601}}^1$

素因数の和:1728

約数の個数: 32

約数和(自身を含む): 38063520

約数和(自身を除く): 18867530

約数列:

[1, 2, 5, 10, 11, 22, 55, 109, 110, 218, 545, 1090, 1199, 1601, 2398, 3202, 5995, 8005, 11990, 16010, 17611, 35222, 88055, 174509, 176110, 349018, 872545, 1745090, 1919599, 3839198, 9597995, 19195990]

約数ペア:

[(1, 19195990), (2, 9597995), (5, 3839198), (10, 1919599), (11, 1745090), (22, 872545), (55, 349018), (109, 176110), (110, 174509), (218, 88055), (545, 35222), (1090, 17611), (1199, 16010), (1601, 11990), (2398, 8005), (3202, 5995)]