20215978

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1\times {\mathrm{631}}^1$

素因数の和:909

約数の個数: 16

約数和(自身を含む): 30897216

約数和(自身を除く): 10681238

約数列:

[1, 2, 83, 166, 193, 386, 631, 1262, 16019, 32038, 52373, 104746, 121783, 243566, 10107989, 20215978]

約数ペア:

[(1, 20215978), (2, 10107989), (83, 243566), (166, 121783), (193, 104746), (386, 52373), (631, 32038), (1262, 16019)]