19689460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140639}}^1$

素因数の和:140655

約数の個数: 24

約数和(自身を含む): 47255040

約数和(自身を除く): 27565580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140639, 281278, 562556, 703195, 984473, 1406390, 1968946, 2812780, 3937892, 4922365, 9844730, 19689460]

約数ペア:

[(1, 19689460), (2, 9844730), (4, 4922365), (5, 3937892), (7, 2812780), (10, 1968946), (14, 1406390), (20, 984473), (28, 703195), (35, 562556), (70, 281278), (140, 140639)]