13281375

素因数分解:

$3^1\times 5^3\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 22374144

約数和(自身を除く): 9092769

約数列:

[1, 3, 5, 15, 25, 75, 107, 125, 321, 331, 375, 535, 993, 1605, 1655, 2675, 4965, 8025, 8275, 13375, 24825, 35417, 40125, 41375, 106251, 124125, 177085, 531255, 885425, 2656275, 4427125, 13281375]

約数ペア:

[(1, 13281375), (3, 4427125), (5, 2656275), (15, 885425), (25, 531255), (75, 177085), (107, 124125), (125, 106251), (321, 41375), (331, 40125), (375, 35417), (535, 24825), (993, 13375), (1605, 8275), (1655, 8025), (2675, 4965)]