18776681

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 24634368

約数和(自身を除く): 5857687

約数列:

[1, 7, 11, 43, 53, 77, 107, 301, 371, 473, 583, 749, 1177, 2279, 3311, 4081, 4601, 5671, 8239, 15953, 25069, 32207, 39697, 50611, 62381, 175483, 243853, 354277, 436667, 1706971, 2682383, 18776681]

約数ペア:

[(1, 18776681), (7, 2682383), (11, 1706971), (43, 436667), (53, 354277), (77, 243853), (107, 175483), (301, 62381), (371, 50611), (473, 39697), (583, 32207), (749, 25069), (1177, 15953), (2279, 8239), (3311, 5671), (4081, 4601)]