20997804938

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{557}}^1\times {\mathrm{155777}}^1$

素因数の和:156358

約数の個数: 24

約数和(自身を含む): 34682725476

約数和(自身を除く): 13684920538

約数列:

[1, 2, 11, 22, 121, 242, 557, 1114, 6127, 12254, 67397, 134794, 155777, 311554, 1713547, 3427094, 18849017, 37698034, 86767789, 173535578, 954445679, 1908891358, 10498902469, 20997804938]

約数ペア:

[(1, 20997804938), (2, 10498902469), (11, 1908891358), (22, 954445679), (121, 173535578), (242, 86767789), (557, 37698034), (1114, 18849017), (6127, 3427094), (12254, 1713547), (67397, 311554), (134794, 155777)]