20397748

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 42223104

約数和(自身を除く): 21825356

約数列:

[1, 2, 4, 7, 14, 28, 67, 83, 131, 134, 166, 262, 268, 332, 469, 524, 581, 917, 938, 1162, 1834, 1876, 2324, 3668, 5561, 8777, 10873, 11122, 17554, 21746, 22244, 35108, 38927, 43492, 61439, 76111, 77854, 122878, 152222, 155708, 245756, 304444, 728491, 1456982, 2913964, 5099437, 10198874, 20397748]

約数ペア:

[(1, 20397748), (2, 10198874), (4, 5099437), (7, 2913964), (14, 1456982), (28, 728491), (67, 304444), (83, 245756), (131, 155708), (134, 152222), (166, 122878), (262, 77854), (268, 76111), (332, 61439), (469, 43492), (524, 38927), (581, 35108), (917, 22244), (938, 21746), (1162, 17554), (1834, 11122), (1876, 10873), (2324, 8777), (3668, 5561)]