20045090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 40516200

約数和(自身を除く): 20471110

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 169, 290, 338, 377, 409, 754, 818, 845, 1690, 1885, 2045, 3770, 4090, 4901, 5317, 9802, 10634, 11861, 23722, 24505, 26585, 49010, 53170, 59305, 69121, 118610, 138242, 154193, 308386, 345605, 691210, 770965, 1541930, 2004509, 4009018, 10022545, 20045090]

約数ペア:

[(1, 20045090), (2, 10022545), (5, 4009018), (10, 2004509), (13, 1541930), (26, 770965), (29, 691210), (58, 345605), (65, 308386), (130, 154193), (145, 138242), (169, 118610), (290, 69121), (338, 59305), (377, 53170), (409, 49010), (754, 26585), (818, 24505), (845, 23722), (1690, 11861), (1885, 10634), (2045, 9802), (3770, 5317), (4090, 4901)]