20984915

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9829}}^1$

素因数の和:9902

約数の個数: 16

約数和(自身を含む): 29254080

約数和(自身を除く): 8269165

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9829, 49145, 68803, 344015, 599569, 2997845, 4196983, 20984915]

約数ペア:

[(1, 20984915), (5, 4196983), (7, 2997845), (35, 599569), (61, 344015), (305, 68803), (427, 49145), (2135, 9829)]