19665790

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{313}}^1$

素因数の和:484

約数の個数: 32

約数和(自身を含む): 36444096

約数和(自身を除く): 16778306

約数列:

[1, 2, 5, 10, 61, 103, 122, 206, 305, 313, 515, 610, 626, 1030, 1565, 3130, 6283, 12566, 19093, 31415, 32239, 38186, 62830, 64478, 95465, 161195, 190930, 322390, 1966579, 3933158, 9832895, 19665790]

約数ペア:

[(1, 19665790), (2, 9832895), (5, 3933158), (10, 1966579), (61, 322390), (103, 190930), (122, 161195), (206, 95465), (305, 64478), (313, 62830), (515, 38186), (610, 32239), (626, 31415), (1030, 19093), (1565, 12566), (3130, 6283)]