81889040

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{751}}^1$

素因数の和:840

約数の個数: 80

約数和(自身を含む): 201415680

約数和(自身を除く): 119526640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 47, 58, 80, 94, 116, 145, 188, 232, 235, 290, 376, 464, 470, 580, 751, 752, 940, 1160, 1363, 1502, 1880, 2320, 2726, 3004, 3755, 3760, 5452, 6008, 6815, 7510, 10904, 12016, 13630, 15020, 21779, 21808, 27260, 30040, 35297, 43558, 54520, 60080, 70594, 87116, 108895, 109040, 141188, 174232, 176485, 217790, 282376, 348464, 352970, 435580, 564752, 705940, 871160, 1023613, 1411880, 1742320, 2047226, 2823760, 4094452, 5118065, 8188904, 10236130, 16377808, 20472260, 40944520, 81889040]

約数ペア:

[(1, 81889040), (2, 40944520), (4, 20472260), (5, 16377808), (8, 10236130), (10, 8188904), (16, 5118065), (20, 4094452), (29, 2823760), (40, 2047226), (47, 1742320), (58, 1411880), (80, 1023613), (94, 871160), (116, 705940), (145, 564752), (188, 435580), (232, 352970), (235, 348464), (290, 282376), (376, 217790), (464, 176485), (470, 174232), (580, 141188), (751, 109040), (752, 108895), (940, 87116), (1160, 70594), (1363, 60080), (1502, 54520), (1880, 43558), (2320, 35297), (2726, 30040), (3004, 27260), (3755, 21808), (3760, 21779), (5452, 15020), (6008, 13630), (6815, 12016), (7510, 10904)]