21231276

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3923}}^1$

素因数の和:3982

約数の個数: 48

約数和(自身を含む): 55375488

約数和(自身を除く): 34144212

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 41, 44, 66, 82, 123, 132, 164, 246, 451, 492, 902, 1353, 1804, 2706, 3923, 5412, 7846, 11769, 15692, 23538, 43153, 47076, 86306, 129459, 160843, 172612, 258918, 321686, 482529, 517836, 643372, 965058, 1769273, 1930116, 3538546, 5307819, 7077092, 10615638, 21231276]

約数ペア:

[(1, 21231276), (2, 10615638), (3, 7077092), (4, 5307819), (6, 3538546), (11, 1930116), (12, 1769273), (22, 965058), (33, 643372), (41, 517836), (44, 482529), (66, 321686), (82, 258918), (123, 172612), (132, 160843), (164, 129459), (246, 86306), (451, 47076), (492, 43153), (902, 23538), (1353, 15692), (1804, 11769), (2706, 7846), (3923, 5412)]