18907420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4657}}^1$

素因数の和:4702

約数の個数: 48

約数和(自身を含む): 46952640

約数和(自身を除く): 28045220

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, 4657, 9314, 18628, 23285, 32599, 46570, 65198, 93140, 130396, 135053, 162995, 270106, 325990, 540212, 651980, 675265, 945371, 1350530, 1890742, 2701060, 3781484, 4726855, 9453710, 18907420]

約数ペア:

[(1, 18907420), (2, 9453710), (4, 4726855), (5, 3781484), (7, 2701060), (10, 1890742), (14, 1350530), (20, 945371), (28, 675265), (29, 651980), (35, 540212), (58, 325990), (70, 270106), (116, 162995), (140, 135053), (145, 130396), (203, 93140), (290, 65198), (406, 46570), (580, 32599), (812, 23285), (1015, 18628), (2030, 9314), (4060, 4657)]