25881973

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{83}}^2$

素因数の和:213

約数の個数: 18

約数和(自身を含む): 29969954

約数和(自身を除く): 4087981

約数列:

[1, 13, 17, 83, 221, 289, 1079, 1411, 3757, 6889, 18343, 23987, 89557, 117113, 311831, 1522469, 1990921, 25881973]

約数ペア:

[(1, 25881973), (13, 1990921), (17, 1522469), (83, 311831), (221, 117113), (289, 89557), (1079, 23987), (1411, 18343), (3757, 6889)]