1388890790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{997}}^1\times {\mathrm{2843}}^1$

素因数の和:3861

約数の個数: 48

約数和(自身を含む): 2912108112

約数和(自身を除く): 1523217322

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 997, 1994, 2843, 4985, 5686, 6979, 9970, 13958, 14215, 19901, 28430, 34895, 39802, 48853, 69790, 97706, 99505, 139307, 199010, 244265, 278614, 488530, 696535, 1393070, 2834471, 5668942, 14172355, 19841297, 28344710, 39682594, 99206485, 138889079, 198412970, 277778158, 694445395, 1388890790]

約数ペア:

[(1, 1388890790), (2, 694445395), (5, 277778158), (7, 198412970), (10, 138889079), (14, 99206485), (35, 39682594), (49, 28344710), (70, 19841297), (98, 14172355), (245, 5668942), (490, 2834471), (997, 1393070), (1994, 696535), (2843, 488530), (4985, 278614), (5686, 244265), (6979, 199010), (9970, 139307), (13958, 99505), (14215, 97706), (19901, 69790), (28430, 48853), (34895, 39802)]