278138883

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{18443}}^1$

素因数の和:18914

約数の個数: 16

約数和(自身を含む): 405472896

約数和(自身を除く): 127334013

約数列:

[1, 3, 11, 33, 457, 1371, 5027, 15081, 18443, 55329, 202873, 608619, 8428451, 25285353, 92712961, 278138883]

約数ペア:

[(1, 278138883), (3, 92712961), (11, 25285353), (33, 8428451), (457, 608619), (1371, 202873), (5027, 55329), (15081, 18443)]