278755540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{68659}}^1$

素因数の和:68704

約数の個数: 48

約数和(自身を含む): 692092800

約数和(自身を除く): 413337260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 68659, 137318, 274636, 343295, 480613, 686590, 961226, 1373180, 1922452, 1991111, 2403065, 3982222, 4806130, 7964444, 9612260, 9955555, 13937777, 19911110, 27875554, 39822220, 55751108, 69688885, 139377770, 278755540]

約数ペア:

[(1, 278755540), (2, 139377770), (4, 69688885), (5, 55751108), (7, 39822220), (10, 27875554), (14, 19911110), (20, 13937777), (28, 9955555), (29, 9612260), (35, 7964444), (58, 4806130), (70, 3982222), (116, 2403065), (140, 1991111), (145, 1922452), (203, 1373180), (290, 961226), (406, 686590), (580, 480613), (812, 343295), (1015, 274636), (2030, 137318), (4060, 68659)]