19880515

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{821}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 24857280

約数和(自身を除く): 4976765

約数列:

[1, 5, 29, 145, 167, 821, 835, 4105, 4843, 23809, 24215, 119045, 137107, 685535, 3976103, 19880515]

約数ペア:

[(1, 19880515), (5, 3976103), (29, 685535), (145, 137107), (167, 119045), (821, 24215), (835, 23809), (4105, 4843)]