2097151049

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{45971}}^1$

素因数の和:46018

約数の個数: 20

約数和(自身を含む): 2575351440

約数和(自身を除く): 478200391

約数列:

[1, 7, 19, 49, 133, 343, 931, 2401, 6517, 45619, 45971, 321797, 873449, 2252579, 6114143, 15768053, 42799001, 110376371, 299593007, 2097151049]

約数ペア:

[(1, 2097151049), (7, 299593007), (19, 110376371), (49, 42799001), (133, 15768053), (343, 6114143), (931, 2252579), (2401, 873449), (6517, 321797), (45619, 45971)]