18020075

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{643}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 23956800

約数和(自身を除く): 5936725

約数列:

[1, 5, 19, 25, 59, 95, 295, 475, 643, 1121, 1475, 3215, 5605, 12217, 16075, 28025, 37937, 61085, 189685, 305425, 720803, 948425, 3604015, 18020075]

約数ペア:

[(1, 18020075), (5, 3604015), (19, 948425), (25, 720803), (59, 305425), (95, 189685), (295, 61085), (475, 37937), (643, 28025), (1121, 16075), (1475, 12217), (3215, 5605)]