18031240

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1277}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 40717080

約数和(自身を除く): 22685840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1277, 1412, 1765, 2554, 2824, 3530, 5108, 6385, 7060, 10216, 12770, 14120, 25540, 51080, 450781, 901562, 1803124, 2253905, 3606248, 4507810, 9015620, 18031240]

約数ペア:

[(1, 18031240), (2, 9015620), (4, 4507810), (5, 3606248), (8, 2253905), (10, 1803124), (20, 901562), (40, 450781), (353, 51080), (706, 25540), (1277, 14120), (1412, 12770), (1765, 10216), (2554, 7060), (2824, 6385), (3530, 5108)]