664804820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{496123}}^1$

素因数の和:496199

約数の個数: 24

約数和(自身を含む): 1416930144

約数和(自身を除く): 752125324

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 496123, 992246, 1984492, 2480615, 4961230, 9922460, 33240241, 66480482, 132960964, 166201205, 332402410, 664804820]

約数ペア:

[(1, 664804820), (2, 332402410), (4, 166201205), (5, 132960964), (10, 66480482), (20, 33240241), (67, 9922460), (134, 4961230), (268, 2480615), (335, 1984492), (670, 992246), (1340, 496123)]