21186140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{439}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 47308800

約数和(自身を除く): 26122660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 190, 254, 380, 439, 508, 635, 878, 1270, 1756, 2195, 2413, 2540, 4390, 4826, 8341, 8780, 9652, 12065, 16682, 24130, 33364, 41705, 48260, 55753, 83410, 111506, 166820, 223012, 278765, 557530, 1059307, 1115060, 2118614, 4237228, 5296535, 10593070, 21186140]

約数ペア:

[(1, 21186140), (2, 10593070), (4, 5296535), (5, 4237228), (10, 2118614), (19, 1115060), (20, 1059307), (38, 557530), (76, 278765), (95, 223012), (127, 166820), (190, 111506), (254, 83410), (380, 55753), (439, 48260), (508, 41705), (635, 33364), (878, 24130), (1270, 16682), (1756, 12065), (2195, 9652), (2413, 8780), (2540, 8341), (4390, 4826)]