17851820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4397}}^1$

素因数の和:4442

約数の個数: 48

約数和(自身を含む): 44331840

約数和(自身を除く): 26480020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4397, 8794, 17588, 21985, 30779, 43970, 61558, 87940, 123116, 127513, 153895, 255026, 307790, 510052, 615580, 637565, 892591, 1275130, 1785182, 2550260, 3570364, 4462955, 8925910, 17851820]

約数ペア:

[(1, 17851820), (2, 8925910), (4, 4462955), (5, 3570364), (7, 2550260), (10, 1785182), (14, 1275130), (20, 892591), (28, 637565), (29, 615580), (35, 510052), (58, 307790), (70, 255026), (116, 153895), (140, 127513), (145, 123116), (203, 87940), (290, 61558), (406, 43970), (580, 30779), (812, 21985), (1015, 17588), (2030, 8794), (4060, 4397)]