289481320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{887}}^1$

素因数の和:1138

約数の個数: 64

約数和(自身を含む): 671328000

約数和(自身を除く): 381846680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 199, 205, 328, 398, 410, 796, 820, 887, 995, 1592, 1640, 1774, 1990, 3548, 3980, 4435, 7096, 7960, 8159, 8870, 16318, 17740, 32636, 35480, 36367, 40795, 65272, 72734, 81590, 145468, 163180, 176513, 181835, 290936, 326360, 353026, 363670, 706052, 727340, 882565, 1412104, 1454680, 1765130, 3530260, 7060520, 7237033, 14474066, 28948132, 36185165, 57896264, 72370330, 144740660, 289481320]

約数ペア:

[(1, 289481320), (2, 144740660), (4, 72370330), (5, 57896264), (8, 36185165), (10, 28948132), (20, 14474066), (40, 7237033), (41, 7060520), (82, 3530260), (164, 1765130), (199, 1454680), (205, 1412104), (328, 882565), (398, 727340), (410, 706052), (796, 363670), (820, 353026), (887, 326360), (995, 290936), (1592, 181835), (1640, 176513), (1774, 163180), (1990, 145468), (3548, 81590), (3980, 72734), (4435, 65272), (7096, 40795), (7960, 36367), (8159, 35480), (8870, 32636), (16318, 17740)]