81820620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64937}}^1$

素因数の和:64959

約数の個数: 72

約数和(自身を含む): 283649184

約数和(自身を除く): 201828564

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64937, 129874, 194811, 259748, 324685, 389622, 454559, 584433, 649370, 779244, 909118, 974055, 1168866, 1298740, 1363677, 1818236, 1948110, 2272795, 2337732, 2727354, 2922165, 3896220, 4091031, 4545590, 5454708, 5844330, 6818385, 8182062, 9091180, 11688660, 13636770, 16364124, 20455155, 27273540, 40910310, 81820620]

約数ペア:

[(1, 81820620), (2, 40910310), (3, 27273540), (4, 20455155), (5, 16364124), (6, 13636770), (7, 11688660), (9, 9091180), (10, 8182062), (12, 6818385), (14, 5844330), (15, 5454708), (18, 4545590), (20, 4091031), (21, 3896220), (28, 2922165), (30, 2727354), (35, 2337732), (36, 2272795), (42, 1948110), (45, 1818236), (60, 1363677), (63, 1298740), (70, 1168866), (84, 974055), (90, 909118), (105, 779244), (126, 649370), (140, 584433), (180, 454559), (210, 389622), (252, 324685), (315, 259748), (420, 194811), (630, 129874), (1260, 64937)]