639444938

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{7019}}^1$

素因数の和:7174

約数の個数: 32

約数和(自身を含む): 1082652480

約数和(自身を除く): 443207542

約数列:

[1, 2, 11, 22, 41, 82, 101, 202, 451, 902, 1111, 2222, 4141, 7019, 8282, 14038, 45551, 77209, 91102, 154418, 287779, 575558, 708919, 1417838, 3165569, 6331138, 7798109, 15596218, 29065679, 58131358, 319722469, 639444938]

約数ペア:

[(1, 639444938), (2, 319722469), (11, 58131358), (22, 29065679), (41, 15596218), (82, 7798109), (101, 6331138), (202, 3165569), (451, 1417838), (902, 708919), (1111, 575558), (2222, 287779), (4141, 154418), (7019, 91102), (8282, 77209), (14038, 45551)]