64781488

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{213097}}^1$

素因数の和:213124

約数の個数: 20

約数和(自身を含む): 132120760

約数和(自身を除く): 67339272

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 213097, 426194, 852388, 1704776, 3409552, 4048843, 8097686, 16195372, 32390744, 64781488]

約数ペア:

[(1, 64781488), (2, 32390744), (4, 16195372), (8, 8097686), (16, 4048843), (19, 3409552), (38, 1704776), (76, 852388), (152, 426194), (304, 213097)]