20781068

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{619}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 45830400

約数和(自身を除く): 25049332

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 109, 154, 218, 308, 436, 619, 763, 1199, 1238, 1526, 2398, 2476, 3052, 4333, 4796, 6809, 8393, 8666, 13618, 16786, 17332, 27236, 33572, 47663, 67471, 95326, 134942, 190652, 269884, 472297, 742181, 944594, 1484362, 1889188, 2968724, 5195267, 10390534, 20781068]

約数ペア:

[(1, 20781068), (2, 10390534), (4, 5195267), (7, 2968724), (11, 1889188), (14, 1484362), (22, 944594), (28, 742181), (44, 472297), (77, 269884), (109, 190652), (154, 134942), (218, 95326), (308, 67471), (436, 47663), (619, 33572), (763, 27236), (1199, 17332), (1238, 16786), (1526, 13618), (2398, 8666), (2476, 8393), (3052, 6809), (4333, 4796)]