21290280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^2$

素因数の和:279

約数の個数: 96

約数和(自身を含む): 70230240

約数和(自身を除く): 48939960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 127, 132, 165, 220, 254, 264, 330, 381, 440, 508, 635, 660, 762, 1016, 1270, 1320, 1397, 1524, 1905, 2540, 2794, 3048, 3810, 4191, 5080, 5588, 6985, 7620, 8382, 11176, 13970, 15240, 16129, 16764, 20955, 27940, 32258, 33528, 41910, 48387, 55880, 64516, 80645, 83820, 96774, 129032, 161290, 167640, 177419, 193548, 241935, 322580, 354838, 387096, 483870, 532257, 645160, 709676, 887095, 967740, 1064514, 1419352, 1774190, 1935480, 2129028, 2661285, 3548380, 4258056, 5322570, 7096760, 10645140, 21290280]

約数ペア:

[(1, 21290280), (2, 10645140), (3, 7096760), (4, 5322570), (5, 4258056), (6, 3548380), (8, 2661285), (10, 2129028), (11, 1935480), (12, 1774190), (15, 1419352), (20, 1064514), (22, 967740), (24, 887095), (30, 709676), (33, 645160), (40, 532257), (44, 483870), (55, 387096), (60, 354838), (66, 322580), (88, 241935), (110, 193548), (120, 177419), (127, 167640), (132, 161290), (165, 129032), (220, 96774), (254, 83820), (264, 80645), (330, 64516), (381, 55880), (440, 48387), (508, 41910), (635, 33528), (660, 32258), (762, 27940), (1016, 20955), (1270, 16764), (1320, 16129), (1397, 15240), (1524, 13970), (1905, 11176), (2540, 8382), (2794, 7620), (3048, 6985), (3810, 5588), (4191, 5080)]