261717765104

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{860913701}}^1$

素因数の和:860913728

約数の個数: 20

約数和(自身を含む): 533766495240

約数和(自身を除く): 272048730136

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 860913701, 1721827402, 3443654804, 6887309608, 13774619216, 16357360319, 32714720638, 65429441276, 130858882552, 261717765104]

約数ペア:

[(1, 261717765104), (2, 130858882552), (4, 65429441276), (8, 32714720638), (16, 16357360319), (19, 13774619216), (38, 6887309608), (76, 3443654804), (152, 1721827402), (304, 860913701)]