21368065

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 29082240

約数和(自身を除く): 7714175

約数列:

[1, 5, 17, 19, 85, 95, 101, 131, 323, 505, 655, 1615, 1717, 1919, 2227, 2489, 8585, 9595, 11135, 12445, 13231, 32623, 42313, 66155, 163115, 211565, 224927, 251389, 1124635, 1256945, 4273613, 21368065]

約数ペア:

[(1, 21368065), (5, 4273613), (17, 1256945), (19, 1124635), (85, 251389), (95, 224927), (101, 211565), (131, 163115), (323, 66155), (505, 42313), (655, 32623), (1615, 13231), (1717, 12445), (1919, 11135), (2227, 9595), (2489, 8585)]