19864140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1319}}^1$

素因数の和:1582

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 36019380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 753, 1004, 1255, 1319, 1506, 2510, 2638, 3012, 3765, 3957, 5020, 5276, 6595, 7530, 7914, 13190, 15060, 15828, 19785, 26380, 39570, 79140, 331069, 662138, 993207, 1324276, 1655345, 1986414, 3310690, 3972828, 4966035, 6621380, 9932070, 19864140]

約数ペア:

[(1, 19864140), (2, 9932070), (3, 6621380), (4, 4966035), (5, 3972828), (6, 3310690), (10, 1986414), (12, 1655345), (15, 1324276), (20, 993207), (30, 662138), (60, 331069), (251, 79140), (502, 39570), (753, 26380), (1004, 19785), (1255, 15828), (1319, 15060), (1506, 13190), (2510, 7914), (2638, 7530), (3012, 6595), (3765, 5276), (3957, 5020)]