640185712

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{8221}}^1$

素因数の和:8417

約数の個数: 40

約数和(自身を含む): 1288683392

約数和(自身を除く): 648497680

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 157, 248, 314, 496, 628, 1256, 2512, 4867, 8221, 9734, 16442, 19468, 32884, 38936, 65768, 77872, 131536, 254851, 509702, 1019404, 1290697, 2038808, 2581394, 4077616, 5162788, 10325576, 20651152, 40011607, 80023214, 160046428, 320092856, 640185712]

約数ペア:

[(1, 640185712), (2, 320092856), (4, 160046428), (8, 80023214), (16, 40011607), (31, 20651152), (62, 10325576), (124, 5162788), (157, 4077616), (248, 2581394), (314, 2038808), (496, 1290697), (628, 1019404), (1256, 509702), (2512, 254851), (4867, 131536), (8221, 77872), (9734, 65768), (16442, 38936), (19468, 32884)]