20884724

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1061}}^1$

素因数の和:1128

約数の個数: 48

約数和(自身を含む): 45198720

約数和(自身を除く): 24313996

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 74, 76, 133, 148, 259, 266, 518, 532, 703, 1036, 1061, 1406, 2122, 2812, 4244, 4921, 7427, 9842, 14854, 19684, 20159, 29708, 39257, 40318, 78514, 80636, 141113, 157028, 274799, 282226, 549598, 564452, 745883, 1099196, 1491766, 2983532, 5221181, 10442362, 20884724]

約数ペア:

[(1, 20884724), (2, 10442362), (4, 5221181), (7, 2983532), (14, 1491766), (19, 1099196), (28, 745883), (37, 564452), (38, 549598), (74, 282226), (76, 274799), (133, 157028), (148, 141113), (259, 80636), (266, 78514), (518, 40318), (532, 39257), (703, 29708), (1036, 20159), (1061, 19684), (1406, 14854), (2122, 9842), (2812, 7427), (4244, 4921)]