28032291

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2089}}^1$

素因数の和:2176

約数の個数: 32

約数和(自身を含む): 48153600

約数和(自身を除く): 20121309

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1917, 2089, 4473, 6267, 13419, 14623, 18801, 43869, 56403, 131607, 148319, 394821, 444957, 1038233, 1334871, 3114699, 4004613, 9344097, 28032291]

約数ペア:

[(1, 28032291), (3, 9344097), (7, 4004613), (9, 3114699), (21, 1334871), (27, 1038233), (63, 444957), (71, 394821), (189, 148319), (213, 131607), (497, 56403), (639, 43869), (1491, 18801), (1917, 14623), (2089, 13419), (4473, 6267)]