21380380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152717}}^1$

素因数の和:152733

約数の個数: 24

約数和(自身を含む): 51313248

約数和(自身を除く): 29932868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152717, 305434, 610868, 763585, 1069019, 1527170, 2138038, 3054340, 4276076, 5345095, 10690190, 21380380]

約数ペア:

[(1, 21380380), (2, 10690190), (4, 5345095), (5, 4276076), (7, 3054340), (10, 2138038), (14, 1527170), (20, 1069019), (28, 763585), (35, 610868), (70, 305434), (140, 152717)]