257991440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{2663}}^1$

素因数の和:2856

約数の個数: 80

約数和(自身を含む): 689741568

約数和(自身を除く): 431750128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 173, 280, 346, 560, 692, 865, 1211, 1384, 1730, 2422, 2663, 2768, 3460, 4844, 5326, 6055, 6920, 9688, 10652, 12110, 13315, 13840, 18641, 19376, 21304, 24220, 26630, 37282, 42608, 48440, 53260, 74564, 93205, 96880, 106520, 149128, 186410, 213040, 298256, 372820, 460699, 745640, 921398, 1491280, 1842796, 2303495, 3224893, 3685592, 4606990, 6449786, 7371184, 9213980, 12899572, 16124465, 18427960, 25799144, 32248930, 36855920, 51598288, 64497860, 128995720, 257991440]

約数ペア:

[(1, 257991440), (2, 128995720), (4, 64497860), (5, 51598288), (7, 36855920), (8, 32248930), (10, 25799144), (14, 18427960), (16, 16124465), (20, 12899572), (28, 9213980), (35, 7371184), (40, 6449786), (56, 4606990), (70, 3685592), (80, 3224893), (112, 2303495), (140, 1842796), (173, 1491280), (280, 921398), (346, 745640), (560, 460699), (692, 372820), (865, 298256), (1211, 213040), (1384, 186410), (1730, 149128), (2422, 106520), (2663, 96880), (2768, 93205), (3460, 74564), (4844, 53260), (5326, 48440), (6055, 42608), (6920, 37282), (9688, 26630), (10652, 24220), (12110, 21304), (13315, 19376), (13840, 18641)]