139208020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{142049}}^1$

素因数の和:142072

約数の個数: 36

約数和(自身を含む): 340067700

約数和(自身を除く): 200859680

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 142049, 284098, 568196, 710245, 994343, 1420490, 1988686, 2840980, 3977372, 4971715, 6960401, 9943430, 13920802, 19886860, 27841604, 34802005, 69604010, 139208020]

約数ペア:

[(1, 139208020), (2, 69604010), (4, 34802005), (5, 27841604), (7, 19886860), (10, 13920802), (14, 9943430), (20, 6960401), (28, 4971715), (35, 3977372), (49, 2840980), (70, 1988686), (98, 1420490), (140, 994343), (196, 710245), (245, 568196), (490, 284098), (980, 142049)]