19939505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{2089}}^1$

素因数の和:2200

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 5341135

約数列:

[1, 5, 23, 83, 115, 415, 1909, 2089, 9545, 10445, 48047, 173387, 240235, 866935, 3987901, 19939505]

約数ペア:

[(1, 19939505), (5, 3987901), (23, 866935), (83, 240235), (115, 173387), (415, 48047), (1909, 10445), (2089, 9545)]