18170910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2113

約数の個数: 48

約数和(自身を含む): 47736000

約数和(自身を除く): 29565090

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 101, 202, 303, 505, 606, 909, 1010, 1515, 1818, 1999, 3030, 3998, 4545, 5997, 9090, 9995, 11994, 17991, 19990, 29985, 35982, 59970, 89955, 179910, 201899, 403798, 605697, 1009495, 1211394, 1817091, 2018990, 3028485, 3634182, 6056970, 9085455, 18170910]

約数ペア:

[(1, 18170910), (2, 9085455), (3, 6056970), (5, 3634182), (6, 3028485), (9, 2018990), (10, 1817091), (15, 1211394), (18, 1009495), (30, 605697), (45, 403798), (90, 201899), (101, 179910), (202, 89955), (303, 59970), (505, 35982), (606, 29985), (909, 19990), (1010, 17991), (1515, 11994), (1818, 9995), (1999, 9090), (3030, 5997), (3998, 4545)]