20680303

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1$

素因数の和:359

約数の個数: 24

約数和(自身を含む): 25695600

約数和(自身を除く): 5015297

約数列:

[1, 7, 19, 49, 97, 133, 229, 679, 931, 1603, 1843, 4351, 4753, 11221, 12901, 22213, 30457, 90307, 155491, 213199, 422047, 1088437, 2954329, 20680303]

約数ペア:

[(1, 20680303), (7, 2954329), (19, 1088437), (49, 422047), (97, 213199), (133, 155491), (229, 90307), (679, 30457), (931, 22213), (1603, 12901), (1843, 11221), (4351, 4753)]