139984180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{142841}}^1$

素因数の和:142864

約数の個数: 36

約数和(自身を含む): 341963748

約数和(自身を除く): 201979568

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 142841, 285682, 571364, 714205, 999887, 1428410, 1999774, 2856820, 3999548, 4999435, 6999209, 9998870, 13998418, 19997740, 27996836, 34996045, 69992090, 139984180]

約数ペア:

[(1, 139984180), (2, 69992090), (4, 34996045), (5, 27996836), (7, 19997740), (10, 13998418), (14, 9998870), (20, 6999209), (28, 4999435), (35, 3999548), (49, 2856820), (70, 1999774), (98, 1428410), (140, 999887), (196, 714205), (245, 571364), (490, 285682), (980, 142841)]