28388555

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1117}}^1$

素因数の和:1175

約数の個数: 32

約数和(自身を含む): 40569984

約数和(自身を除く): 12181429

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 221, 299, 391, 1105, 1117, 1495, 1955, 5083, 5585, 14521, 18989, 25415, 25691, 72605, 94945, 128455, 246857, 333983, 436747, 1234285, 1669915, 2183735, 5677711, 28388555]

約数ペア:

[(1, 28388555), (5, 5677711), (13, 2183735), (17, 1669915), (23, 1234285), (65, 436747), (85, 333983), (115, 246857), (221, 128455), (299, 94945), (391, 72605), (1105, 25691), (1117, 25415), (1495, 18989), (1955, 14521), (5083, 5585)]