204420280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{757}}^1$

素因数の和:968

約数の個数: 64

約数和(自身を含む): 474265440

約数和(自身を除く): 269845160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 157, 172, 215, 314, 344, 430, 628, 757, 785, 860, 1256, 1514, 1570, 1720, 3028, 3140, 3785, 6056, 6280, 6751, 7570, 13502, 15140, 27004, 30280, 32551, 33755, 54008, 65102, 67510, 118849, 130204, 135020, 162755, 237698, 260408, 270040, 325510, 475396, 594245, 651020, 950792, 1188490, 1302040, 2376980, 4753960, 5110507, 10221014, 20442028, 25552535, 40884056, 51105070, 102210140, 204420280]

約数ペア:

[(1, 204420280), (2, 102210140), (4, 51105070), (5, 40884056), (8, 25552535), (10, 20442028), (20, 10221014), (40, 5110507), (43, 4753960), (86, 2376980), (157, 1302040), (172, 1188490), (215, 950792), (314, 651020), (344, 594245), (430, 475396), (628, 325510), (757, 270040), (785, 260408), (860, 237698), (1256, 162755), (1514, 135020), (1570, 130204), (1720, 118849), (3028, 67510), (3140, 65102), (3785, 54008), (6056, 33755), (6280, 32551), (6751, 30280), (7570, 27004), (13502, 15140)]