81831421

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{509}}^1$

素因数の和:733

約数の個数: 24

約数和(自身を含む): 101512440

約数和(自身を除く): 19681019

約数列:

[1, 7, 17, 49, 119, 193, 509, 833, 1351, 3281, 3563, 8653, 9457, 22967, 24941, 60571, 98237, 160769, 423997, 687659, 1670029, 4813613, 11690203, 81831421]

約数ペア:

[(1, 81831421), (7, 11690203), (17, 4813613), (49, 1670029), (119, 687659), (193, 423997), (509, 160769), (833, 98237), (1351, 60571), (3281, 24941), (3563, 22967), (8653, 9457)]