81211228

素因数分解:

$2^2\times 7^2\times {\mathrm{367}}^1\times {\mathrm{1129}}^1$

素因数の和:1514

約数の個数: 36

約数和(自身を含む): 165920160

約数和(自身を除く): 84708932

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 367, 734, 1129, 1468, 2258, 2569, 4516, 5138, 7903, 10276, 15806, 17983, 31612, 35966, 55321, 71932, 110642, 221284, 414343, 828686, 1657372, 2900401, 5800802, 11601604, 20302807, 40605614, 81211228]

約数ペア:

[(1, 81211228), (2, 40605614), (4, 20302807), (7, 11601604), (14, 5800802), (28, 2900401), (49, 1657372), (98, 828686), (196, 414343), (367, 221284), (734, 110642), (1129, 71932), (1468, 55321), (2258, 35966), (2569, 31612), (4516, 17983), (5138, 15806), (7903, 10276)]