12808880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:366

約数の個数: 80

約数和(自身を含む): 34551360

約数和(自身を除く): 21742480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 257, 280, 356, 445, 514, 560, 623, 712, 890, 1028, 1246, 1285, 1424, 1780, 1799, 2056, 2492, 2570, 3115, 3560, 3598, 4112, 4984, 5140, 6230, 7120, 7196, 8995, 9968, 10280, 12460, 14392, 17990, 20560, 22873, 24920, 28784, 35980, 45746, 49840, 71960, 91492, 114365, 143920, 160111, 182984, 228730, 320222, 365968, 457460, 640444, 800555, 914920, 1280888, 1601110, 1829840, 2561776, 3202220, 6404440, 12808880]

約数ペア:

[(1, 12808880), (2, 6404440), (4, 3202220), (5, 2561776), (7, 1829840), (8, 1601110), (10, 1280888), (14, 914920), (16, 800555), (20, 640444), (28, 457460), (35, 365968), (40, 320222), (56, 228730), (70, 182984), (80, 160111), (89, 143920), (112, 114365), (140, 91492), (178, 71960), (257, 49840), (280, 45746), (356, 35980), (445, 28784), (514, 24920), (560, 22873), (623, 20560), (712, 17990), (890, 14392), (1028, 12460), (1246, 10280), (1285, 9968), (1424, 8995), (1780, 7196), (1799, 7120), (2056, 6230), (2492, 5140), (2570, 4984), (3115, 4112), (3560, 3598)]