667788280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{1951}}^1$

素因数の和:2204

約数の個数: 64

約数和(自身を含む): 1545984000

約数和(自身を除く): 878195720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 199, 215, 344, 398, 430, 796, 860, 995, 1592, 1720, 1951, 1990, 3902, 3980, 7804, 7960, 8557, 9755, 15608, 17114, 19510, 34228, 39020, 42785, 68456, 78040, 83893, 85570, 167786, 171140, 335572, 342280, 388249, 419465, 671144, 776498, 838930, 1552996, 1677860, 1941245, 3105992, 3355720, 3882490, 7764980, 15529960, 16694707, 33389414, 66778828, 83473535, 133557656, 166947070, 333894140, 667788280]

約数ペア:

[(1, 667788280), (2, 333894140), (4, 166947070), (5, 133557656), (8, 83473535), (10, 66778828), (20, 33389414), (40, 16694707), (43, 15529960), (86, 7764980), (172, 3882490), (199, 3355720), (215, 3105992), (344, 1941245), (398, 1677860), (430, 1552996), (796, 838930), (860, 776498), (995, 671144), (1592, 419465), (1720, 388249), (1951, 342280), (1990, 335572), (3902, 171140), (3980, 167786), (7804, 85570), (7960, 83893), (8557, 78040), (9755, 68456), (15608, 42785), (17114, 39020), (19510, 34228)]