20049085

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 30369600

約数和(自身を除く): 10320515

約数列:

[1, 5, 7, 19, 35, 49, 59, 73, 95, 133, 245, 295, 365, 413, 511, 665, 931, 1121, 1387, 2065, 2555, 2891, 3577, 4307, 4655, 5605, 6935, 7847, 9709, 14455, 17885, 21535, 30149, 39235, 48545, 54929, 67963, 81833, 150745, 211043, 274645, 339815, 409165, 572831, 1055215, 2864155, 4009817, 20049085]

約数ペア:

[(1, 20049085), (5, 4009817), (7, 2864155), (19, 1055215), (35, 572831), (49, 409165), (59, 339815), (73, 274645), (95, 211043), (133, 150745), (245, 81833), (295, 67963), (365, 54929), (413, 48545), (511, 39235), (665, 30149), (931, 21535), (1121, 17885), (1387, 14455), (2065, 9709), (2555, 7847), (2891, 6935), (3577, 5605), (4307, 4655)]