27991964

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6991}}^1$

素因数の和:7026

約数の個数: 48

約数和(自身を含む): 65780736

約数和(自身を除く): 37788772

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 6991, 13982, 27964, 48937, 76901, 90883, 97874, 153802, 181766, 195748, 307604, 363532, 538307, 636181, 999713, 1076614, 1272362, 1999426, 2153228, 2544724, 3998852, 6997991, 13995982, 27991964]

約数ペア:

[(1, 27991964), (2, 13995982), (4, 6997991), (7, 3998852), (11, 2544724), (13, 2153228), (14, 1999426), (22, 1272362), (26, 1076614), (28, 999713), (44, 636181), (52, 538307), (77, 363532), (91, 307604), (143, 195748), (154, 181766), (182, 153802), (286, 97874), (308, 90883), (364, 76901), (572, 48937), (1001, 27964), (2002, 13982), (4004, 6991)]