217018280

素因数分解:

$2^3\times 5^1\times {\mathrm{5425457}}^1$

素因数の和:5425468

約数の個数: 16

約数和(自身を含む): 488291220

約数和(自身を除く): 271272940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5425457, 10850914, 21701828, 27127285, 43403656, 54254570, 108509140, 217018280]

約数ペア:

[(1, 217018280), (2, 108509140), (4, 54254570), (5, 43403656), (8, 27127285), (10, 21701828), (20, 10850914), (40, 5425457)]