639735838

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1\times {\mathrm{1013}}^1$

素因数の和:1672

約数の個数: 32

約数和(自身を含む): 1113615360

約数和(自身を除く): 473879522

約数列:

[1, 2, 7, 14, 79, 158, 553, 571, 1013, 1106, 1142, 2026, 3997, 7091, 7994, 14182, 45109, 80027, 90218, 160054, 315763, 560189, 578423, 631526, 1120378, 1156846, 4048961, 8097922, 45695417, 91390834, 319867919, 639735838]

約数ペア:

[(1, 639735838), (2, 319867919), (7, 91390834), (14, 45695417), (79, 8097922), (158, 4048961), (553, 1156846), (571, 1120378), (1013, 631526), (1106, 578423), (1142, 560189), (2026, 315763), (3997, 160054), (7091, 90218), (7994, 80027), (14182, 45109)]