20998470

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{337}}^1$

素因数の和:445

約数の個数: 64

約数和(自身を含む): 52955136

約数和(自身を除く): 31956666

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 67, 93, 134, 155, 186, 201, 310, 335, 337, 402, 465, 670, 674, 930, 1005, 1011, 1685, 2010, 2022, 2077, 3370, 4154, 5055, 6231, 10110, 10385, 10447, 12462, 20770, 20894, 22579, 31155, 31341, 45158, 52235, 62310, 62682, 67737, 104470, 112895, 135474, 156705, 225790, 313410, 338685, 677370, 699949, 1399898, 2099847, 3499745, 4199694, 6999490, 10499235, 20998470]

約数ペア:

[(1, 20998470), (2, 10499235), (3, 6999490), (5, 4199694), (6, 3499745), (10, 2099847), (15, 1399898), (30, 699949), (31, 677370), (62, 338685), (67, 313410), (93, 225790), (134, 156705), (155, 135474), (186, 112895), (201, 104470), (310, 67737), (335, 62682), (337, 62310), (402, 52235), (465, 45158), (670, 31341), (674, 31155), (930, 22579), (1005, 20894), (1011, 20770), (1685, 12462), (2010, 10447), (2022, 10385), (2077, 10110), (3370, 6231), (4154, 5055)]