18343240

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{919}}^1$

素因数の和:1429

約数の個数: 32

約数和(自身を含む): 41400000

約数和(自身を除く): 23056760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 919, 998, 1838, 1996, 2495, 3676, 3992, 4595, 4990, 7352, 9190, 9980, 18380, 19960, 36760, 458581, 917162, 1834324, 2292905, 3668648, 4585810, 9171620, 18343240]

約数ペア:

[(1, 18343240), (2, 9171620), (4, 4585810), (5, 3668648), (8, 2292905), (10, 1834324), (20, 917162), (40, 458581), (499, 36760), (919, 19960), (998, 18380), (1838, 9980), (1996, 9190), (2495, 7352), (3676, 4990), (3992, 4595)]