21243068

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{167}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 27019972

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 59, 77, 98, 118, 154, 167, 196, 236, 308, 334, 413, 539, 649, 668, 826, 1078, 1169, 1298, 1652, 1837, 2156, 2338, 2596, 2891, 3674, 4543, 4676, 5782, 7348, 8183, 9086, 9853, 11564, 12859, 16366, 18172, 19706, 25718, 31801, 32732, 39412, 51436, 63602, 68971, 90013, 108383, 127204, 137942, 180026, 216766, 275884, 360052, 433532, 482797, 758681, 965594, 1517362, 1931188, 3034724, 5310767, 10621534, 21243068]

約数ペア:

[(1, 21243068), (2, 10621534), (4, 5310767), (7, 3034724), (11, 1931188), (14, 1517362), (22, 965594), (28, 758681), (44, 482797), (49, 433532), (59, 360052), (77, 275884), (98, 216766), (118, 180026), (154, 137942), (167, 127204), (196, 108383), (236, 90013), (308, 68971), (334, 63602), (413, 51436), (539, 39412), (649, 32732), (668, 31801), (826, 25718), (1078, 19706), (1169, 18172), (1298, 16366), (1652, 12859), (1837, 11564), (2156, 9853), (2338, 9086), (2596, 8183), (2891, 7348), (3674, 5782), (4543, 4676)]