21706195

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{191}}^2$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 31685472

約数和(自身を除く): 9979277

約数列:

[1, 5, 7, 17, 35, 85, 119, 191, 595, 955, 1337, 3247, 6685, 16235, 22729, 36481, 113645, 182405, 255367, 620177, 1276835, 3100885, 4341239, 21706195]

約数ペア:

[(1, 21706195), (5, 4341239), (7, 3100885), (17, 1276835), (35, 620177), (85, 255367), (119, 182405), (191, 113645), (595, 36481), (955, 22729), (1337, 16235), (3247, 6685)]