28107440

素因数分解:

$2^4\times 5^1\times {\mathrm{351343}}^1$

素因数の和:351356

約数の個数: 20

約数和(自身を含む): 65349984

約数和(自身を除く): 37242544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 351343, 702686, 1405372, 1756715, 2810744, 3513430, 5621488, 7026860, 14053720, 28107440]

約数ペア:

[(1, 28107440), (2, 14053720), (4, 7026860), (5, 5621488), (8, 3513430), (10, 2810744), (16, 1756715), (20, 1405372), (40, 702686), (80, 351343)]