20819876

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2939}}^1$

素因数の和:2984

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 26596444

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 44, 46, 77, 92, 154, 161, 253, 308, 322, 506, 644, 1012, 1771, 2939, 3542, 5878, 7084, 11756, 20573, 32329, 41146, 64658, 67597, 82292, 129316, 135194, 226303, 270388, 452606, 473179, 743567, 905212, 946358, 1487134, 1892716, 2974268, 5204969, 10409938, 20819876]

約数ペア:

[(1, 20819876), (2, 10409938), (4, 5204969), (7, 2974268), (11, 1892716), (14, 1487134), (22, 946358), (23, 905212), (28, 743567), (44, 473179), (46, 452606), (77, 270388), (92, 226303), (154, 135194), (161, 129316), (253, 82292), (308, 67597), (322, 64658), (506, 41146), (644, 32329), (1012, 20573), (1771, 11756), (2939, 7084), (3542, 5878)]