15991899

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{647}}^1$

素因数の和:775

約数の個数: 32

約数和(自身を含む): 26873856

約数和(自身を除く): 10881957

約数列:

[1, 3, 7, 11, 21, 33, 77, 107, 231, 321, 647, 749, 1177, 1941, 2247, 3531, 4529, 7117, 8239, 13587, 21351, 24717, 49819, 69229, 149457, 207687, 484603, 761519, 1453809, 2284557, 5330633, 15991899]

約数ペア:

[(1, 15991899), (3, 5330633), (7, 2284557), (11, 1453809), (21, 761519), (33, 484603), (77, 207687), (107, 149457), (231, 69229), (321, 49819), (647, 24717), (749, 21351), (1177, 13587), (1941, 8239), (2247, 7117), (3531, 4529)]