64651984

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{212671}}^1$

素因数の和:212698

約数の個数: 20

約数和(自身を含む): 131856640

約数和(自身を除く): 67204656

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 212671, 425342, 850684, 1701368, 3402736, 4040749, 8081498, 16162996, 32325992, 64651984]

約数ペア:

[(1, 64651984), (2, 32325992), (4, 16162996), (8, 8081498), (16, 4040749), (19, 3402736), (38, 1701368), (76, 850684), (152, 425342), (304, 212671)]