21290060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 30964660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 47, 55, 58, 71, 94, 110, 116, 142, 145, 188, 220, 235, 284, 290, 319, 355, 470, 517, 580, 638, 710, 781, 940, 1034, 1276, 1363, 1420, 1562, 1595, 2059, 2068, 2585, 2726, 3124, 3190, 3337, 3905, 4118, 5170, 5452, 6380, 6674, 6815, 7810, 8236, 10295, 10340, 13348, 13630, 14993, 15620, 16685, 20590, 22649, 27260, 29986, 33370, 36707, 41180, 45298, 59972, 66740, 73414, 74965, 90596, 96773, 113245, 146828, 149930, 183535, 193546, 226490, 299860, 367070, 387092, 452980, 483865, 734140, 967730, 1064503, 1935460, 2129006, 4258012, 5322515, 10645030, 21290060]

約数ペア:

[(1, 21290060), (2, 10645030), (4, 5322515), (5, 4258012), (10, 2129006), (11, 1935460), (20, 1064503), (22, 967730), (29, 734140), (44, 483865), (47, 452980), (55, 387092), (58, 367070), (71, 299860), (94, 226490), (110, 193546), (116, 183535), (142, 149930), (145, 146828), (188, 113245), (220, 96773), (235, 90596), (284, 74965), (290, 73414), (319, 66740), (355, 59972), (470, 45298), (517, 41180), (580, 36707), (638, 33370), (710, 29986), (781, 27260), (940, 22649), (1034, 20590), (1276, 16685), (1363, 15620), (1420, 14993), (1562, 13630), (1595, 13348), (2059, 10340), (2068, 10295), (2585, 8236), (2726, 7810), (3124, 6815), (3190, 6674), (3337, 6380), (3905, 5452), (4118, 5170)]