31257985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{331}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 43887744

約数和(自身を除く): 12629759

約数列:

[1, 5, 11, 17, 55, 85, 101, 187, 331, 505, 935, 1111, 1655, 1717, 3641, 5555, 5627, 8585, 18205, 18887, 28135, 33431, 61897, 94435, 167155, 309485, 367741, 568327, 1838705, 2841635, 6251597, 31257985]

約数ペア:

[(1, 31257985), (5, 6251597), (11, 2841635), (17, 1838705), (55, 568327), (85, 367741), (101, 309485), (187, 167155), (331, 94435), (505, 61897), (935, 33431), (1111, 28135), (1655, 18887), (1717, 18205), (3641, 8585), (5555, 5627)]