20358177

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 34309440

約数和(自身を除く): 13951263

約数列:

[1, 3, 7, 19, 21, 37, 49, 57, 111, 133, 147, 197, 259, 399, 591, 703, 777, 931, 1379, 1813, 2109, 2793, 3743, 4137, 4921, 5439, 7289, 9653, 11229, 14763, 21867, 26201, 28959, 34447, 51023, 78603, 103341, 138491, 153069, 183407, 357161, 415473, 550221, 969437, 1071483, 2908311, 6786059, 20358177]

約数ペア:

[(1, 20358177), (3, 6786059), (7, 2908311), (19, 1071483), (21, 969437), (37, 550221), (49, 415473), (57, 357161), (111, 183407), (133, 153069), (147, 138491), (197, 103341), (259, 78603), (399, 51023), (591, 34447), (703, 28959), (777, 26201), (931, 21867), (1379, 14763), (1813, 11229), (2109, 9653), (2793, 7289), (3743, 5439), (4137, 4921)]