20001990358

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3889}}^1\times {\mathrm{9929}}^1$

素因数の和:13864

約数の個数: 32

約数和(自身を含む): 35228462400

約数和(自身を除く): 15226472042

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 3889, 7778, 9929, 19858, 27223, 54446, 69503, 139006, 143893, 287786, 367373, 734746, 1007251, 2014502, 2571611, 5143222, 38613881, 77227762, 270297167, 540594334, 1428713597, 2857427194, 10000995179, 20001990358]

約数ペア:

[(1, 20001990358), (2, 10000995179), (7, 2857427194), (14, 1428713597), (37, 540594334), (74, 270297167), (259, 77227762), (518, 38613881), (3889, 5143222), (7778, 2571611), (9929, 2014502), (19858, 1007251), (27223, 734746), (54446, 367373), (69503, 287786), (139006, 143893)]