1278889772

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{2663}}^1$

素因数の和:2846

約数の個数: 48

約数和(自身を含む): 2416780800

約数和(自身を除く): 1137891028

約数列:

[1, 2, 4, 19, 38, 71, 76, 89, 142, 178, 284, 356, 1349, 1691, 2663, 2698, 3382, 5326, 5396, 6319, 6764, 10652, 12638, 25276, 50597, 101194, 120061, 189073, 202388, 237007, 240122, 378146, 474014, 480244, 756292, 948028, 3592387, 4503133, 7184774, 9006266, 14369548, 16827497, 18012532, 33654994, 67309988, 319722443, 639444886, 1278889772]

約数ペア:

[(1, 1278889772), (2, 639444886), (4, 319722443), (19, 67309988), (38, 33654994), (71, 18012532), (76, 16827497), (89, 14369548), (142, 9006266), (178, 7184774), (284, 4503133), (356, 3592387), (1349, 948028), (1691, 756292), (2663, 480244), (2698, 474014), (3382, 378146), (5326, 240122), (5396, 237007), (6319, 202388), (6764, 189073), (10652, 120061), (12638, 101194), (25276, 50597)]