81235980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21491}}^1$

素因数の和:21516

約数の個数: 96

約数和(自身を含む): 288852480

約数和(自身を除く): 207616500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21491, 42982, 64473, 85964, 107455, 128946, 150437, 193419, 214910, 257892, 300874, 322365, 386838, 429820, 451311, 580257, 601748, 644730, 752185, 773676, 902622, 967095, 1160514, 1289460, 1353933, 1504370, 1805244, 1934190, 2256555, 2321028, 2707866, 2901285, 3008740, 3868380, 4061799, 4513110, 5415732, 5802570, 6769665, 8123598, 9026220, 11605140, 13539330, 16247196, 20308995, 27078660, 40617990, 81235980]

約数ペア:

[(1, 81235980), (2, 40617990), (3, 27078660), (4, 20308995), (5, 16247196), (6, 13539330), (7, 11605140), (9, 9026220), (10, 8123598), (12, 6769665), (14, 5802570), (15, 5415732), (18, 4513110), (20, 4061799), (21, 3868380), (27, 3008740), (28, 2901285), (30, 2707866), (35, 2321028), (36, 2256555), (42, 1934190), (45, 1805244), (54, 1504370), (60, 1353933), (63, 1289460), (70, 1160514), (84, 967095), (90, 902622), (105, 773676), (108, 752185), (126, 644730), (135, 601748), (140, 580257), (180, 451311), (189, 429820), (210, 386838), (252, 322365), (270, 300874), (315, 257892), (378, 214910), (420, 193419), (540, 150437), (630, 128946), (756, 107455), (945, 85964), (1260, 64473), (1890, 42982), (3780, 21491)]