1491640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 3402000

約数和(自身を除く): 1910360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 419, 445, 712, 838, 890, 1676, 1780, 2095, 3352, 3560, 4190, 8380, 16760, 37291, 74582, 149164, 186455, 298328, 372910, 745820, 1491640]

約数ペア:

[(1, 1491640), (2, 745820), (4, 372910), (5, 298328), (8, 186455), (10, 149164), (20, 74582), (40, 37291), (89, 16760), (178, 8380), (356, 4190), (419, 3560), (445, 3352), (712, 2095), (838, 1780), (890, 1676)]