18460820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4547}}^1$

素因数の和:4592

約数の個数: 48

約数和(自身を含む): 45843840

約数和(自身を除く): 27383020

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, 4547, 9094, 18188, 22735, 31829, 45470, 63658, 90940, 127316, 131863, 159145, 263726, 318290, 527452, 636580, 659315, 923041, 1318630, 1846082, 2637260, 3692164, 4615205, 9230410, 18460820]

約数ペア:

[(1, 18460820), (2, 9230410), (4, 4615205), (5, 3692164), (7, 2637260), (10, 1846082), (14, 1318630), (20, 923041), (28, 659315), (29, 636580), (35, 527452), (58, 318290), (70, 263726), (116, 159145), (140, 131863), (145, 127316), (203, 90940), (290, 63658), (406, 45470), (580, 31829), (812, 22735), (1015, 18188), (2030, 9094), (4060, 4547)]