198247775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{720901}}^1$

素因数の和:720922

約数の個数: 12

約数和(自身を含む): 268175544

約数和(自身を除く): 69927769

約数列:

[1, 5, 11, 25, 55, 275, 720901, 3604505, 7929911, 18022525, 39649555, 198247775]

約数ペア:

[(1, 198247775), (5, 39649555), (11, 18022525), (25, 7929911), (55, 3604505), (275, 720901)]