81431480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1051}}^1$

素因数の和:1224

約数の個数: 64

約数和(自身を含む): 198828000

約数和(自身を除く): 117396520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 149, 260, 298, 520, 596, 745, 1051, 1192, 1490, 1937, 2102, 2980, 3874, 4204, 5255, 5960, 7748, 8408, 9685, 10510, 13663, 15496, 19370, 21020, 27326, 38740, 42040, 54652, 68315, 77480, 109304, 136630, 156599, 273260, 313198, 546520, 626396, 782995, 1252792, 1565990, 2035787, 3131980, 4071574, 6263960, 8143148, 10178935, 16286296, 20357870, 40715740, 81431480]

約数ペア:

[(1, 81431480), (2, 40715740), (4, 20357870), (5, 16286296), (8, 10178935), (10, 8143148), (13, 6263960), (20, 4071574), (26, 3131980), (40, 2035787), (52, 1565990), (65, 1252792), (104, 782995), (130, 626396), (149, 546520), (260, 313198), (298, 273260), (520, 156599), (596, 136630), (745, 109304), (1051, 77480), (1192, 68315), (1490, 54652), (1937, 42040), (2102, 38740), (2980, 27326), (3874, 21020), (4204, 19370), (5255, 15496), (5960, 13663), (7748, 10510), (8408, 9685)]