20778704

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{68351}}^1$

素因数の和:68378

約数の個数: 20

約数和(自身を含む): 42378240

約数和(自身を除く): 21599536

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 68351, 136702, 273404, 546808, 1093616, 1298669, 2597338, 5194676, 10389352, 20778704]

約数ペア:

[(1, 20778704), (2, 10389352), (4, 5194676), (8, 2597338), (16, 1298669), (19, 1093616), (38, 546808), (76, 273404), (152, 136702), (304, 68351)]