18428920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15887}}^1$

素因数の和:15927

約数の個数: 32

約数和(自身を含む): 42897600

約数和(自身を除く): 24468680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 15887, 31774, 63548, 79435, 127096, 158870, 317740, 460723, 635480, 921446, 1842892, 2303615, 3685784, 4607230, 9214460, 18428920]

約数ペア:

[(1, 18428920), (2, 9214460), (4, 4607230), (5, 3685784), (8, 2303615), (10, 1842892), (20, 921446), (29, 635480), (40, 460723), (58, 317740), (116, 158870), (145, 127096), (232, 79435), (290, 63548), (580, 31774), (1160, 15887)]