81264240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1913}}^1$

素因数の和:1991

約数の個数: 120

約数和(自身を含む): 277683120

約数和(自身を除く): 196418880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 59, 60, 72, 80, 90, 118, 120, 144, 177, 180, 236, 240, 295, 354, 360, 472, 531, 590, 708, 720, 885, 944, 1062, 1180, 1416, 1770, 1913, 2124, 2360, 2655, 2832, 3540, 3826, 4248, 4720, 5310, 5739, 7080, 7652, 8496, 9565, 10620, 11478, 14160, 15304, 17217, 19130, 21240, 22956, 28695, 30608, 34434, 38260, 42480, 45912, 57390, 68868, 76520, 86085, 91824, 112867, 114780, 137736, 153040, 172170, 225734, 229560, 275472, 338601, 344340, 451468, 459120, 564335, 677202, 688680, 902936, 1015803, 1128670, 1354404, 1377360, 1693005, 1805872, 2031606, 2257340, 2708808, 3386010, 4063212, 4514680, 5079015, 5417616, 6772020, 8126424, 9029360, 10158030, 13544040, 16252848, 20316060, 27088080, 40632120, 81264240]

約数ペア:

[(1, 81264240), (2, 40632120), (3, 27088080), (4, 20316060), (5, 16252848), (6, 13544040), (8, 10158030), (9, 9029360), (10, 8126424), (12, 6772020), (15, 5417616), (16, 5079015), (18, 4514680), (20, 4063212), (24, 3386010), (30, 2708808), (36, 2257340), (40, 2031606), (45, 1805872), (48, 1693005), (59, 1377360), (60, 1354404), (72, 1128670), (80, 1015803), (90, 902936), (118, 688680), (120, 677202), (144, 564335), (177, 459120), (180, 451468), (236, 344340), (240, 338601), (295, 275472), (354, 229560), (360, 225734), (472, 172170), (531, 153040), (590, 137736), (708, 114780), (720, 112867), (885, 91824), (944, 86085), (1062, 76520), (1180, 68868), (1416, 57390), (1770, 45912), (1913, 42480), (2124, 38260), (2360, 34434), (2655, 30608), (2832, 28695), (3540, 22956), (3826, 21240), (4248, 19130), (4720, 17217), (5310, 15304), (5739, 14160), (7080, 11478), (7652, 10620), (8496, 9565)]