129769520

素因数分解:

$2^4\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1627}}^1$

素因数の和:2637

約数の個数: 40

約数和(自身を含む): 302202384

約数和(自身を除く): 172432864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 997, 1627, 1994, 3254, 3988, 4985, 6508, 7976, 8135, 9970, 13016, 15952, 16270, 19940, 26032, 32540, 39880, 65080, 79760, 130160, 1622119, 3244238, 6488476, 8110595, 12976952, 16221190, 25953904, 32442380, 64884760, 129769520]

約数ペア:

[(1, 129769520), (2, 64884760), (4, 32442380), (5, 25953904), (8, 16221190), (10, 12976952), (16, 8110595), (20, 6488476), (40, 3244238), (80, 1622119), (997, 130160), (1627, 79760), (1994, 65080), (3254, 39880), (3988, 32540), (4985, 26032), (6508, 19940), (7976, 16270), (8135, 15952), (9970, 13016)]