21109906

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 13473134

約数列:

[1, 2, 23, 37, 46, 74, 79, 157, 158, 314, 851, 1702, 1817, 2923, 3611, 3634, 5809, 5846, 7222, 11618, 12403, 24806, 67229, 133607, 134458, 267214, 285269, 458911, 570538, 917822, 10554953, 21109906]

約数ペア:

[(1, 21109906), (2, 10554953), (23, 917822), (37, 570538), (46, 458911), (74, 285269), (79, 267214), (157, 134458), (158, 133607), (314, 67229), (851, 24806), (1702, 12403), (1817, 11618), (2923, 7222), (3611, 5846), (3634, 5809)]