21246655

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 27432000

約数和(自身を除く): 6185345

約数列:

[1, 5, 19, 79, 95, 149, 361, 395, 745, 1501, 1805, 2831, 7505, 11771, 14155, 28519, 53789, 58855, 142595, 223649, 268945, 1118245, 4249331, 21246655]

約数ペア:

[(1, 21246655), (5, 4249331), (19, 1118245), (79, 268945), (95, 223649), (149, 142595), (361, 58855), (395, 53789), (745, 28519), (1501, 14155), (1805, 11771), (2831, 7505)]