21142407

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 35417088

約数和(自身を除く): 14274681

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 169, 187, 221, 223, 429, 507, 561, 663, 669, 1859, 2431, 2453, 2873, 2899, 3791, 5577, 7293, 7359, 8619, 8697, 11373, 31603, 31889, 37687, 41701, 49283, 94809, 95667, 113061, 125103, 147849, 414557, 542113, 640679, 1243671, 1626339, 1922037, 7047469, 21142407]

約数ペア:

[(1, 21142407), (3, 7047469), (11, 1922037), (13, 1626339), (17, 1243671), (33, 640679), (39, 542113), (51, 414557), (143, 147849), (169, 125103), (187, 113061), (221, 95667), (223, 94809), (429, 49283), (507, 41701), (561, 37687), (663, 31889), (669, 31603), (1859, 11373), (2431, 8697), (2453, 8619), (2873, 7359), (2899, 7293), (3791, 5577)]