2105985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:693

約数の個数: 32

約数和(自身を含む): 3981312

約数和(自身を除く): 1875327

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 647, 651, 1085, 1941, 3235, 3255, 4529, 9705, 13587, 20057, 22645, 60171, 67935, 100285, 140399, 300855, 421197, 701995, 2105985]

約数ペア:

[(1, 2105985), (3, 701995), (5, 421197), (7, 300855), (15, 140399), (21, 100285), (31, 67935), (35, 60171), (93, 22645), (105, 20057), (155, 13587), (217, 9705), (465, 4529), (647, 3255), (651, 3235), (1085, 1941)]