21768089

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{1039}}^1$

素因数の和:1160

約数の個数: 16

約数和(自身を含む): 25858560

約数和(自身を除く): 4090471

約数列:

[1, 7, 41, 73, 287, 511, 1039, 2993, 7273, 20951, 42599, 75847, 298193, 530929, 3109727, 21768089]

約数ペア:

[(1, 21768089), (7, 3109727), (41, 530929), (73, 298193), (287, 75847), (511, 42599), (1039, 20951), (2993, 7273)]