28409925

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{9239}}^1$

素因数の和:9293

約数の個数: 24

約数和(自身を含む): 48121920

約数和(自身を除く): 19711995

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 9239, 27717, 46195, 138585, 230975, 378799, 692925, 1136397, 1893995, 5681985, 9469975, 28409925]

約数ペア:

[(1, 28409925), (3, 9469975), (5, 5681985), (15, 1893995), (25, 1136397), (41, 692925), (75, 378799), (123, 230975), (205, 138585), (615, 46195), (1025, 27717), (3075, 9239)]