20745578

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{383}}^1$

素因数の和:518

約数の個数: 32

約数和(自身を含む): 36827136

約数和(自身を除く): 16081558

約数列:

[1, 2, 7, 14, 53, 73, 106, 146, 371, 383, 511, 742, 766, 1022, 2681, 3869, 5362, 7738, 20299, 27083, 27959, 40598, 54166, 55918, 142093, 195713, 284186, 391426, 1481827, 2963654, 10372789, 20745578]

約数ペア:

[(1, 20745578), (2, 10372789), (7, 2963654), (14, 1481827), (53, 391426), (73, 284186), (106, 195713), (146, 142093), (371, 55918), (383, 54166), (511, 40598), (742, 27959), (766, 27083), (1022, 20299), (2681, 7738), (3869, 5362)]