81100620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1291}}^1$

素因数の和:1655

約数の個数: 72

約数和(自身を含む): 246901200

約数和(自身を除く): 165800580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 349, 698, 1047, 1291, 1396, 1745, 2094, 2582, 3141, 3490, 3873, 4188, 5164, 5235, 6282, 6455, 6980, 7746, 10470, 11619, 12564, 12910, 15492, 15705, 19365, 20940, 23238, 25820, 31410, 38730, 46476, 58095, 62820, 77460, 116190, 232380, 450559, 901118, 1351677, 1802236, 2252795, 2703354, 4055031, 4505590, 5406708, 6758385, 8110062, 9011180, 13516770, 16220124, 20275155, 27033540, 40550310, 81100620]

約数ペア:

[(1, 81100620), (2, 40550310), (3, 27033540), (4, 20275155), (5, 16220124), (6, 13516770), (9, 9011180), (10, 8110062), (12, 6758385), (15, 5406708), (18, 4505590), (20, 4055031), (30, 2703354), (36, 2252795), (45, 1802236), (60, 1351677), (90, 901118), (180, 450559), (349, 232380), (698, 116190), (1047, 77460), (1291, 62820), (1396, 58095), (1745, 46476), (2094, 38730), (2582, 31410), (3141, 25820), (3490, 23238), (3873, 20940), (4188, 19365), (5164, 15705), (5235, 15492), (6282, 12910), (6455, 12564), (6980, 11619), (7746, 10470)]