128347760

素因数分解:

$2^4\times 5^1\times {\mathrm{1604347}}^1$

素因数の和:1604360

約数の個数: 20

約数和(自身を含む): 298408728

約数和(自身を除く): 170060968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1604347, 3208694, 6417388, 8021735, 12834776, 16043470, 25669552, 32086940, 64173880, 128347760]

約数ペア:

[(1, 128347760), (2, 64173880), (4, 32086940), (5, 25669552), (8, 16043470), (10, 12834776), (16, 8021735), (20, 6417388), (40, 3208694), (80, 1604347)]