28756208

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138251}}^1$

素因数の和:138272

約数の個数: 20

約数和(自身を含む): 60001368

約数和(自身を除く): 31245160

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138251, 276502, 553004, 1106008, 1797263, 2212016, 3594526, 7189052, 14378104, 28756208]

約数ペア:

[(1, 28756208), (2, 14378104), (4, 7189052), (8, 3594526), (13, 2212016), (16, 1797263), (26, 1106008), (52, 553004), (104, 276502), (208, 138251)]