80638180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{575987}}^1$

素因数の和:576003

約数の個数: 24

約数和(自身を含む): 193531968

約数和(自身を除く): 112893788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 575987, 1151974, 2303948, 2879935, 4031909, 5759870, 8063818, 11519740, 16127636, 20159545, 40319090, 80638180]

約数ペア:

[(1, 80638180), (2, 40319090), (4, 20159545), (5, 16127636), (7, 11519740), (10, 8063818), (14, 5759870), (20, 4031909), (28, 2879935), (35, 2303948), (70, 1151974), (140, 575987)]