15978175

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:483

約数の個数: 24

約数和(自身を含む): 20891520

約数和(自身を除く): 4913345

約数列:

[1, 5, 25, 31, 53, 155, 265, 389, 775, 1325, 1643, 1945, 8215, 9725, 12059, 20617, 41075, 60295, 103085, 301475, 515425, 639127, 3195635, 15978175]

約数ペア:

[(1, 15978175), (5, 3195635), (25, 639127), (31, 515425), (53, 301475), (155, 103085), (265, 60295), (389, 41075), (775, 20617), (1325, 12059), (1643, 9725), (1945, 8215)]