20681289

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{191}}^1\times {\mathrm{227}}^1$

素因数の和:477

約数の個数: 24

約数和(自身を含む): 30730752

約数和(自身を除く): 10049463

約数列:

[1, 3, 9, 53, 159, 191, 227, 477, 573, 681, 1719, 2043, 10123, 12031, 30369, 36093, 43357, 91107, 108279, 130071, 390213, 2297921, 6893763, 20681289]

約数ペア:

[(1, 20681289), (3, 6893763), (9, 2297921), (53, 390213), (159, 130071), (191, 108279), (227, 91107), (477, 43357), (573, 36093), (681, 30369), (1719, 12031), (2043, 10123)]