68421915

素因数分解:

$3^4\times 5^1\times {\mathrm{168943}}^1$

素因数の和:168960

約数の個数: 20

約数和(自身を含む): 122653344

約数和(自身を除く): 54231429

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 168943, 506829, 844715, 1520487, 2534145, 4561461, 7602435, 13684383, 22807305, 68421915]

約数ペア:

[(1, 68421915), (3, 22807305), (5, 13684383), (9, 7602435), (15, 4561461), (27, 2534145), (45, 1520487), (81, 844715), (135, 506829), (405, 168943)]