21168717

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 31595520

約数和(自身を除く): 10426803

約数列:

[1, 3, 19, 23, 57, 67, 69, 201, 241, 437, 723, 1273, 1311, 1541, 3819, 4579, 4623, 5543, 13737, 16147, 16629, 29279, 48441, 87837, 105317, 306793, 315951, 371381, 920379, 1114143, 7056239, 21168717]

約数ペア:

[(1, 21168717), (3, 7056239), (19, 1114143), (23, 920379), (57, 371381), (67, 315951), (69, 306793), (201, 105317), (241, 87837), (437, 48441), (723, 29279), (1273, 16629), (1311, 16147), (1541, 13737), (3819, 5543), (4579, 4623)]