156655779

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1993}}^1$

素因数の和:2219

約数の個数: 32

約数和(自身を含む): 252679680

約数和(自身を除く): 96023901

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 399, 591, 1379, 1993, 3743, 4137, 5979, 11229, 13951, 26201, 37867, 41853, 78603, 113601, 265069, 392621, 795207, 1177863, 2748347, 7459799, 8245041, 22379397, 52218593, 156655779]

約数ペア:

[(1, 156655779), (3, 52218593), (7, 22379397), (19, 8245041), (21, 7459799), (57, 2748347), (133, 1177863), (197, 795207), (399, 392621), (591, 265069), (1379, 113601), (1993, 78603), (3743, 41853), (4137, 37867), (5979, 26201), (11229, 13951)]