21290352

素因数分解:

$2^4\times 3^1\times {\mathrm{139}}^1\times {\mathrm{3191}}^1$

素因数の和:3341

約数の個数: 40

約数和(自身を含む): 55413120

約数和(自身を除く): 34122768

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 139, 278, 417, 556, 834, 1112, 1668, 2224, 3191, 3336, 6382, 6672, 9573, 12764, 19146, 25528, 38292, 51056, 76584, 153168, 443549, 887098, 1330647, 1774196, 2661294, 3548392, 5322588, 7096784, 10645176, 21290352]

約数ペア:

[(1, 21290352), (2, 10645176), (3, 7096784), (4, 5322588), (6, 3548392), (8, 2661294), (12, 1774196), (16, 1330647), (24, 887098), (48, 443549), (139, 153168), (278, 76584), (417, 51056), (556, 38292), (834, 25528), (1112, 19146), (1668, 12764), (2224, 9573), (3191, 6672), (3336, 6382)]