199941904

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{31477}}^1$

素因数の和:31882

約数の個数: 20

約数和(自身を含む): 388375564

約数和(自身を除く): 188433660

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3176, 6352, 31477, 62954, 125908, 251816, 503632, 12496369, 24992738, 49985476, 99970952, 199941904]

約数ペア:

[(1, 199941904), (2, 99970952), (4, 49985476), (8, 24992738), (16, 12496369), (397, 503632), (794, 251816), (1588, 125908), (3176, 62954), (6352, 31477)]