644481616

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{1388969}}^1$

素因数の和:1389006

約数の個数: 20

約数和(自身を含む): 1291742100

約数和(自身を除く): 647260484

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 1388969, 2777938, 5555876, 11111752, 22223504, 40280101, 80560202, 161120404, 322240808, 644481616]

約数ペア:

[(1, 644481616), (2, 322240808), (4, 161120404), (8, 80560202), (16, 40280101), (29, 22223504), (58, 11111752), (116, 5555876), (232, 2777938), (464, 1388969)]