28478255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 39384576

約数和(自身を除く): 10906321

約数列:

[1, 5, 13, 23, 43, 65, 115, 215, 299, 443, 559, 989, 1495, 2215, 2795, 4945, 5759, 10189, 12857, 19049, 28795, 50945, 64285, 95245, 132457, 247637, 438127, 662285, 1238185, 2190635, 5695651, 28478255]

約数ペア:

[(1, 28478255), (5, 5695651), (13, 2190635), (23, 1238185), (43, 662285), (65, 438127), (115, 247637), (215, 132457), (299, 95245), (443, 64285), (559, 50945), (989, 28795), (1495, 19049), (2215, 12857), (2795, 10189), (4945, 5759)]