12813775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 17342640

約数和(自身を除く): 4528865

約数列:

[1, 5, 13, 25, 65, 89, 325, 443, 445, 1157, 2215, 2225, 5759, 5785, 11075, 28795, 28925, 39427, 143975, 197135, 512551, 985675, 2562755, 12813775]

約数ペア:

[(1, 12813775), (5, 2562755), (13, 985675), (25, 512551), (65, 197135), (89, 143975), (325, 39427), (443, 28925), (445, 28795), (1157, 11075), (2215, 5785), (2225, 5759)]