19910380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142217}}^1$

素因数の和:142233

約数の個数: 24

約数和(自身を含む): 47785248

約数和(自身を除く): 27874868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142217, 284434, 568868, 711085, 995519, 1422170, 1991038, 2844340, 3982076, 4977595, 9955190, 19910380]

約数ペア:

[(1, 19910380), (2, 9955190), (4, 4977595), (5, 3982076), (7, 2844340), (10, 1991038), (14, 1422170), (20, 995519), (28, 711085), (35, 568868), (70, 284434), (140, 142217)]