201781775

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:492

約数の個数: 36

約数和(自身を含む): 273529368

約数和(自身を除く): 71747593

約数列:

[1, 5, 13, 25, 65, 163, 169, 293, 325, 815, 845, 1465, 2119, 3809, 4075, 4225, 7325, 10595, 19045, 27547, 47759, 49517, 52975, 95225, 137735, 238795, 247585, 620867, 688675, 1193975, 1237925, 3104335, 8071271, 15521675, 40356355, 201781775]

約数ペア:

[(1, 201781775), (5, 40356355), (13, 15521675), (25, 8071271), (65, 3104335), (163, 1237925), (169, 1193975), (293, 688675), (325, 620867), (815, 247585), (845, 238795), (1465, 137735), (2119, 95225), (3809, 52975), (4075, 49517), (4225, 47759), (7325, 27547), (10595, 19045)]