128940560

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 160

約数和(自身を含む): 361881600

約数和(自身を除く): 232941040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 127, 140, 148, 185, 196, 245, 254, 259, 280, 296, 343, 370, 392, 490, 508, 518, 560, 592, 635, 686, 740, 784, 889, 980, 1016, 1036, 1270, 1295, 1372, 1480, 1715, 1778, 1813, 1960, 2032, 2072, 2540, 2590, 2744, 2960, 3430, 3556, 3626, 3920, 4144, 4445, 4699, 5080, 5180, 5488, 6223, 6860, 7112, 7252, 8890, 9065, 9398, 10160, 10360, 12446, 12691, 13720, 14224, 14504, 17780, 18130, 18796, 20720, 23495, 24892, 25382, 27440, 29008, 31115, 32893, 35560, 36260, 37592, 43561, 46990, 49784, 50764, 62230, 63455, 65786, 71120, 72520, 75184, 87122, 93980, 99568, 101528, 124460, 126910, 131572, 145040, 164465, 174244, 187960, 203056, 217805, 230251, 248920, 253820, 263144, 328930, 348488, 375920, 435610, 460502, 497840, 507640, 526288, 657860, 696976, 871220, 921004, 1015280, 1151255, 1315720, 1611757, 1742440, 1842008, 2302510, 2631440, 3223514, 3484880, 3684016, 4605020, 6447028, 8058785, 9210040, 12894056, 16117570, 18420080, 25788112, 32235140, 64470280, 128940560]

約数ペア:

[(1, 128940560), (2, 64470280), (4, 32235140), (5, 25788112), (7, 18420080), (8, 16117570), (10, 12894056), (14, 9210040), (16, 8058785), (20, 6447028), (28, 4605020), (35, 3684016), (37, 3484880), (40, 3223514), (49, 2631440), (56, 2302510), (70, 1842008), (74, 1742440), (80, 1611757), (98, 1315720), (112, 1151255), (127, 1015280), (140, 921004), (148, 871220), (185, 696976), (196, 657860), (245, 526288), (254, 507640), (259, 497840), (280, 460502), (296, 435610), (343, 375920), (370, 348488), (392, 328930), (490, 263144), (508, 253820), (518, 248920), (560, 230251), (592, 217805), (635, 203056), (686, 187960), (740, 174244), (784, 164465), (889, 145040), (980, 131572), (1016, 126910), (1036, 124460), (1270, 101528), (1295, 99568), (1372, 93980), (1480, 87122), (1715, 75184), (1778, 72520), (1813, 71120), (1960, 65786), (2032, 63455), (2072, 62230), (2540, 50764), (2590, 49784), (2744, 46990), (2960, 43561), (3430, 37592), (3556, 36260), (3626, 35560), (3920, 32893), (4144, 31115), (4445, 29008), (4699, 27440), (5080, 25382), (5180, 24892), (5488, 23495), (6223, 20720), (6860, 18796), (7112, 18130), (7252, 17780), (8890, 14504), (9065, 14224), (9398, 13720), (10160, 12691), (10360, 12446)]