31305725

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:242

約数の個数: 36

約数和(自身を含む): 43538880

約数和(自身を除く): 12233155

約数列:

[1, 5, 11, 25, 55, 79, 121, 131, 275, 395, 605, 655, 869, 1441, 1975, 3025, 3275, 4345, 7205, 9559, 10349, 15851, 21725, 36025, 47795, 51745, 79255, 113839, 238975, 258725, 396275, 569195, 1252229, 2845975, 6261145, 31305725]

約数ペア:

[(1, 31305725), (5, 6261145), (11, 2845975), (25, 1252229), (55, 569195), (79, 396275), (121, 258725), (131, 238975), (275, 113839), (395, 79255), (605, 51745), (655, 47795), (869, 36025), (1441, 21725), (1975, 15851), (3025, 10349), (3275, 9559), (4345, 7205)]