199977995

素因数分解:

$5^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{8831}}^1$

素因数の和:9490

約数の個数: 16

約数和(自身を含む): 274710528

約数和(自身を除く): 74732533

約数列:

[1, 5, 7, 35, 647, 3235, 4529, 8831, 22645, 44155, 61817, 309085, 5713657, 28568285, 39995599, 199977995]

約数ペア:

[(1, 199977995), (5, 39995599), (7, 28568285), (35, 5713657), (647, 309085), (3235, 61817), (4529, 44155), (8831, 22645)]