28697781

素因数分解:

$3^1\times 7^3\times {\mathrm{167}}^2$

素因数の和:358

約数の個数: 24

約数和(自身を含む): 44891200

約数和(自身を除く): 16193419

約数列:

[1, 3, 7, 21, 49, 147, 167, 343, 501, 1029, 1169, 3507, 8183, 24549, 27889, 57281, 83667, 171843, 195223, 585669, 1366561, 4099683, 9565927, 28697781]

約数ペア:

[(1, 28697781), (3, 9565927), (7, 4099683), (21, 1366561), (49, 585669), (147, 195223), (167, 171843), (343, 83667), (501, 57281), (1029, 27889), (1169, 24549), (3507, 8183)]