647596240

素因数分解:

$2^4\times 5^1\times {\mathrm{8094953}}^1$

素因数の和:8094966

約数の個数: 20

約数和(自身を含む): 1505661444

約数和(自身を除く): 858065204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8094953, 16189906, 32379812, 40474765, 64759624, 80949530, 129519248, 161899060, 323798120, 647596240]

約数ペア:

[(1, 647596240), (2, 323798120), (4, 161899060), (5, 129519248), (8, 80949530), (10, 64759624), (16, 40474765), (20, 32379812), (40, 16189906), (80, 8094953)]