20959995

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28517}}^1$

素因数の和:28539

約数の個数: 24

約数和(自身を含む): 39012624

約数和(自身を除く): 18052629

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28517, 85551, 142585, 199619, 427755, 598857, 998095, 1397333, 2994285, 4191999, 6986665, 20959995]

約数ペア:

[(1, 20959995), (3, 6986665), (5, 4191999), (7, 2994285), (15, 1397333), (21, 998095), (35, 598857), (49, 427755), (105, 199619), (147, 142585), (245, 85551), (735, 28517)]