81404640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{56531}}^1$

素因数の和:56552

約数の個数: 72

約数和(自身を含む): 277798248

約数和(自身を除く): 196393608

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, 56531, 113062, 169593, 226124, 282655, 339186, 452248, 508779, 565310, 678372, 847965, 904496, 1017558, 1130620, 1356744, 1695930, 1808992, 2035116, 2261240, 2543895, 2713488, 3391860, 4070232, 4522480, 5087790, 5426976, 6783720, 8140464, 9044960, 10175580, 13567440, 16280928, 20351160, 27134880, 40702320, 81404640]

約数ペア:

[(1, 81404640), (2, 40702320), (3, 27134880), (4, 20351160), (5, 16280928), (6, 13567440), (8, 10175580), (9, 9044960), (10, 8140464), (12, 6783720), (15, 5426976), (16, 5087790), (18, 4522480), (20, 4070232), (24, 3391860), (30, 2713488), (32, 2543895), (36, 2261240), (40, 2035116), (45, 1808992), (48, 1695930), (60, 1356744), (72, 1130620), (80, 1017558), (90, 904496), (96, 847965), (120, 678372), (144, 565310), (160, 508779), (180, 452248), (240, 339186), (288, 282655), (360, 226124), (480, 169593), (720, 113062), (1440, 56531)]