18310840

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{1999}}^1$

素因数の和:2239

約数の個数: 32

約数和(自身を含む): 41400000

約数和(自身を除く): 23089160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 458, 916, 1145, 1832, 1999, 2290, 3998, 4580, 7996, 9160, 9995, 15992, 19990, 39980, 79960, 457771, 915542, 1831084, 2288855, 3662168, 4577710, 9155420, 18310840]

約数ペア:

[(1, 18310840), (2, 9155420), (4, 4577710), (5, 3662168), (8, 2288855), (10, 1831084), (20, 915542), (40, 457771), (229, 79960), (458, 39980), (916, 19990), (1145, 15992), (1832, 9995), (1999, 9160), (2290, 7996), (3998, 4580)]