21338368

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 46357920

約数和(自身を除く): 25019552

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 107, 128, 152, 164, 214, 256, 304, 328, 428, 608, 656, 779, 856, 1216, 1312, 1558, 1712, 2033, 2432, 2624, 3116, 3424, 4066, 4387, 4864, 5248, 6232, 6848, 8132, 8774, 10496, 12464, 13696, 16264, 17548, 24928, 27392, 32528, 35096, 49856, 65056, 70192, 83353, 99712, 130112, 140384, 166706, 199424, 260224, 280768, 333412, 520448, 561536, 666824, 1123072, 1333648, 2667296, 5334592, 10669184, 21338368]

約数ペア:

[(1, 21338368), (2, 10669184), (4, 5334592), (8, 2667296), (16, 1333648), (19, 1123072), (32, 666824), (38, 561536), (41, 520448), (64, 333412), (76, 280768), (82, 260224), (107, 199424), (128, 166706), (152, 140384), (164, 130112), (214, 99712), (256, 83353), (304, 70192), (328, 65056), (428, 49856), (608, 35096), (656, 32528), (779, 27392), (856, 24928), (1216, 17548), (1312, 16264), (1558, 13696), (1712, 12464), (2033, 10496), (2432, 8774), (2624, 8132), (3116, 6848), (3424, 6232), (4066, 5248), (4387, 4864)]