20105997921

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1\times {\mathrm{1877}}^1$

素因数の和:2326

約数の個数: 48

約数和(自身を含む): 30163985280

約数和(自身を除く): 10057987359

約数列:

[1, 3, 9, 43, 89, 129, 267, 311, 387, 801, 933, 1877, 2799, 3827, 5631, 11481, 13373, 16893, 27679, 34443, 40119, 80711, 83037, 120357, 167053, 242133, 249111, 501159, 583747, 726399, 1190197, 1503477, 1751241, 3570591, 5253723, 7183279, 10711773, 21549837, 25101121, 51953483, 64649511, 75303363, 155860449, 225910089, 467581347, 2233999769, 6701999307, 20105997921]

約数ペア:

[(1, 20105997921), (3, 6701999307), (9, 2233999769), (43, 467581347), (89, 225910089), (129, 155860449), (267, 75303363), (311, 64649511), (387, 51953483), (801, 25101121), (933, 21549837), (1877, 10711773), (2799, 7183279), (3827, 5253723), (5631, 3570591), (11481, 1751241), (13373, 1503477), (16893, 1190197), (27679, 726399), (34443, 583747), (40119, 501159), (80711, 249111), (83037, 242133), (120357, 167053)]