18239980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4877}}^1$

素因数の和:4914

約数の個数: 48

約数和(自身を含む): 44253216

約数和(自身を除く): 26013236

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 4877, 9754, 19508, 24385, 48770, 53647, 82909, 97540, 107294, 165818, 214588, 268235, 331636, 414545, 536470, 829090, 911999, 1072940, 1658180, 1823998, 3647996, 4559995, 9119990, 18239980]

約数ペア:

[(1, 18239980), (2, 9119990), (4, 4559995), (5, 3647996), (10, 1823998), (11, 1658180), (17, 1072940), (20, 911999), (22, 829090), (34, 536470), (44, 414545), (55, 331636), (68, 268235), (85, 214588), (110, 165818), (170, 107294), (187, 97540), (220, 82909), (340, 53647), (374, 48770), (748, 24385), (935, 19508), (1870, 9754), (3740, 4877)]