20385505

素因数分解:

$5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{2437}}^1$

素因数の和:2688

約数の個数: 16

約数和(自身を含む): 28085760

約数和(自身を除く): 7700255

約数列:

[1, 5, 7, 35, 239, 1195, 1673, 2437, 8365, 12185, 17059, 85295, 582443, 2912215, 4077101, 20385505]

約数ペア:

[(1, 20385505), (5, 4077101), (7, 2912215), (35, 582443), (239, 85295), (1195, 17059), (1673, 12185), (2437, 8365)]