20699805

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28163}}^1$

素因数の和:28185

約数の個数: 24

約数和(自身を含む): 38528352

約数和(自身を除く): 17828547

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28163, 84489, 140815, 197141, 422445, 591423, 985705, 1379987, 2957115, 4139961, 6899935, 20699805]

約数ペア:

[(1, 20699805), (3, 6899935), (5, 4139961), (7, 2957115), (15, 1379987), (21, 985705), (35, 591423), (49, 422445), (105, 197141), (147, 140815), (245, 84489), (735, 28163)]