20427741

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:306

約数の個数: 32

約数和(自身を含む): 31347200

約数和(自身を除く): 10919459

約数列:

[1, 3, 9, 27, 61, 79, 157, 183, 237, 471, 549, 711, 1413, 1647, 2133, 4239, 4819, 9577, 12403, 14457, 28731, 37209, 43371, 86193, 111627, 130113, 258579, 334881, 756583, 2269749, 6809247, 20427741]

約数ペア:

[(1, 20427741), (3, 6809247), (9, 2269749), (27, 756583), (61, 334881), (79, 258579), (157, 130113), (183, 111627), (237, 86193), (471, 43371), (549, 37209), (711, 28731), (1413, 14457), (1647, 12403), (2133, 9577), (4239, 4819)]