198558440

素因数分解:

$2^3\times 5^1\times {\mathrm{4963961}}^1$

素因数の和:4963972

約数の個数: 16

約数和(自身を含む): 446756580

約数和(自身を除く): 248198140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4963961, 9927922, 19855844, 24819805, 39711688, 49639610, 99279220, 198558440]

約数ペア:

[(1, 198558440), (2, 99279220), (4, 49639610), (5, 39711688), (8, 24819805), (10, 19855844), (20, 9927922), (40, 4963961)]