101999440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:404

約数の個数: 80

約数和(自身を含む): 245520000

約数和(自身を除く): 143520560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 149, 172, 199, 215, 298, 344, 398, 430, 596, 688, 745, 796, 860, 995, 1192, 1490, 1592, 1720, 1990, 2384, 2980, 3184, 3440, 3980, 5960, 6407, 7960, 8557, 11920, 12814, 15920, 17114, 25628, 29651, 32035, 34228, 42785, 51256, 59302, 64070, 68456, 85570, 102512, 118604, 128140, 136912, 148255, 171140, 237208, 256280, 296510, 342280, 474416, 512560, 593020, 684560, 1186040, 1274993, 2372080, 2549986, 5099972, 6374965, 10199944, 12749930, 20399888, 25499860, 50999720, 101999440]

約数ペア:

[(1, 101999440), (2, 50999720), (4, 25499860), (5, 20399888), (8, 12749930), (10, 10199944), (16, 6374965), (20, 5099972), (40, 2549986), (43, 2372080), (80, 1274993), (86, 1186040), (149, 684560), (172, 593020), (199, 512560), (215, 474416), (298, 342280), (344, 296510), (398, 256280), (430, 237208), (596, 171140), (688, 148255), (745, 136912), (796, 128140), (860, 118604), (995, 102512), (1192, 85570), (1490, 68456), (1592, 64070), (1720, 59302), (1990, 51256), (2384, 42785), (2980, 34228), (3184, 32035), (3440, 29651), (3980, 25628), (5960, 17114), (6407, 15920), (7960, 12814), (8557, 11920)]