15561915

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1049}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 11049285

約数列:

[1, 3, 5, 15, 23, 43, 69, 115, 129, 215, 345, 645, 989, 1049, 2967, 3147, 4945, 5245, 14835, 15735, 24127, 45107, 72381, 120635, 135321, 225535, 361905, 676605, 1037461, 3112383, 5187305, 15561915]

約数ペア:

[(1, 15561915), (3, 5187305), (5, 3112383), (15, 1037461), (23, 676605), (43, 361905), (69, 225535), (115, 135321), (129, 120635), (215, 72381), (345, 45107), (645, 24127), (989, 15735), (1049, 14835), (2967, 5245), (3147, 4945)]