81205920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{56393}}^1$

素因数の和:56414

約数の個数: 72

約数和(自身を含む): 277120116

約数和(自身を除く): 195914196

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 56393, 112786, 169179, 225572, 281965, 338358, 451144, 507537, 563930, 676716, 845895, 902288, 1015074, 1127860, 1353432, 1691790, 1804576, 2030148, 2255720, 2537685, 2706864, 3383580, 4060296, 4511440, 5075370, 5413728, 6767160, 8120592, 9022880, 10150740, 13534320, 16241184, 20301480, 27068640, 40602960, 81205920]

約数ペア:

[(1, 81205920), (2, 40602960), (3, 27068640), (4, 20301480), (5, 16241184), (6, 13534320), (8, 10150740), (9, 9022880), (10, 8120592), (12, 6767160), (15, 5413728), (16, 5075370), (18, 4511440), (20, 4060296), (24, 3383580), (30, 2706864), (32, 2537685), (36, 2255720), (40, 2030148), (45, 1804576), (48, 1691790), (60, 1353432), (72, 1127860), (80, 1015074), (90, 902288), (96, 845895), (120, 676716), (144, 563930), (160, 507537), (180, 451144), (240, 338358), (288, 281965), (360, 225572), (480, 169179), (720, 112786), (1440, 56393)]