85829720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 199584000

約数和(自身を除く): 113754280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 139, 172, 215, 278, 344, 359, 430, 556, 695, 718, 860, 1112, 1390, 1436, 1720, 1795, 2780, 2872, 3590, 5560, 5977, 7180, 11954, 14360, 15437, 23908, 29885, 30874, 47816, 49901, 59770, 61748, 77185, 99802, 119540, 123496, 154370, 199604, 239080, 249505, 308740, 399208, 499010, 617480, 998020, 1996040, 2145743, 4291486, 8582972, 10728715, 17165944, 21457430, 42914860, 85829720]

約数ペア:

[(1, 85829720), (2, 42914860), (4, 21457430), (5, 17165944), (8, 10728715), (10, 8582972), (20, 4291486), (40, 2145743), (43, 1996040), (86, 998020), (139, 617480), (172, 499010), (215, 399208), (278, 308740), (344, 249505), (359, 239080), (430, 199604), (556, 154370), (695, 123496), (718, 119540), (860, 99802), (1112, 77185), (1390, 61748), (1436, 59770), (1720, 49901), (1795, 47816), (2780, 30874), (2872, 29885), (3590, 23908), (5560, 15437), (5977, 14360), (7180, 11954)]