18840760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{269}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 45489600

約数和(自身を除く): 26648840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 103, 136, 170, 206, 269, 340, 412, 515, 538, 680, 824, 1030, 1076, 1345, 1751, 2060, 2152, 2690, 3502, 4120, 4573, 5380, 7004, 8755, 9146, 10760, 14008, 17510, 18292, 22865, 27707, 35020, 36584, 45730, 55414, 70040, 91460, 110828, 138535, 182920, 221656, 277070, 471019, 554140, 942038, 1108280, 1884076, 2355095, 3768152, 4710190, 9420380, 18840760]

約数ペア:

[(1, 18840760), (2, 9420380), (4, 4710190), (5, 3768152), (8, 2355095), (10, 1884076), (17, 1108280), (20, 942038), (34, 554140), (40, 471019), (68, 277070), (85, 221656), (103, 182920), (136, 138535), (170, 110828), (206, 91460), (269, 70040), (340, 55414), (412, 45730), (515, 36584), (538, 35020), (680, 27707), (824, 22865), (1030, 18292), (1076, 17510), (1345, 14008), (1751, 10760), (2060, 9146), (2152, 8755), (2690, 7004), (3502, 5380), (4120, 4573)]