820995

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{1117}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 1529424

約数和(自身を除く): 708429

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 1117, 3351, 5585, 7819, 16755, 23457, 39095, 54733, 117285, 164199, 273665, 820995]

約数ペア:

[(1, 820995), (3, 273665), (5, 164199), (7, 117285), (15, 54733), (21, 39095), (35, 23457), (49, 16755), (105, 7819), (147, 5585), (245, 3351), (735, 1117)]