20021445

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3449}}^1$

素因数の和:3506

約数の個数: 32

約数和(自身を含む): 36432000

約数和(自身を除く): 16410555

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3449, 5805, 10347, 17245, 31041, 51735, 93123, 148307, 155205, 444921, 465615, 741535, 1334763, 2224605, 4004289, 6673815, 20021445]

約数ペア:

[(1, 20021445), (3, 6673815), (5, 4004289), (9, 2224605), (15, 1334763), (27, 741535), (43, 465615), (45, 444921), (129, 155205), (135, 148307), (215, 93123), (387, 51735), (645, 31041), (1161, 17245), (1935, 10347), (3449, 5805)]