19521355

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 29795040

約数和(自身を除く): 10273685

約数列:

[1, 5, 7, 17, 35, 43, 49, 85, 109, 119, 215, 245, 301, 545, 595, 731, 763, 833, 1505, 1853, 2107, 3655, 3815, 4165, 4687, 5117, 5341, 9265, 10535, 12971, 23435, 25585, 26705, 32809, 35819, 64855, 79679, 90797, 164045, 179095, 229663, 398395, 453985, 557753, 1148315, 2788765, 3904271, 19521355]

約数ペア:

[(1, 19521355), (5, 3904271), (7, 2788765), (17, 1148315), (35, 557753), (43, 453985), (49, 398395), (85, 229663), (109, 179095), (119, 164045), (215, 90797), (245, 79679), (301, 64855), (545, 35819), (595, 32809), (731, 26705), (763, 25585), (833, 23435), (1505, 12971), (1853, 10535), (2107, 9265), (3655, 5341), (3815, 5117), (4165, 4687)]