129643120

素因数分解:

$2^4\times 5^1\times {\mathrm{1620539}}^1$

素因数の和:1620552

約数の個数: 20

約数和(自身を含む): 301420440

約数和(自身を除く): 171777320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1620539, 3241078, 6482156, 8102695, 12964312, 16205390, 25928624, 32410780, 64821560, 129643120]

約数ペア:

[(1, 129643120), (2, 64821560), (4, 32410780), (5, 25928624), (8, 16205390), (10, 12964312), (16, 8102695), (20, 6482156), (40, 3241078), (80, 1620539)]