15997791

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 23500800

約数和(自身を除く): 7503009

約数列:

[1, 3, 19, 57, 59, 67, 71, 177, 201, 213, 1121, 1273, 1349, 3363, 3819, 3953, 4047, 4189, 4757, 11859, 12567, 14271, 75107, 79591, 90383, 225321, 238773, 271149, 280663, 841989, 5332597, 15997791]

約数ペア:

[(1, 15997791), (3, 5332597), (19, 841989), (57, 280663), (59, 271149), (67, 238773), (71, 225321), (177, 90383), (201, 79591), (213, 75107), (1121, 14271), (1273, 12567), (1349, 11859), (3363, 4757), (3819, 4189), (3953, 4047)]