21904256

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:403

約数の個数: 64

約数和(自身を含む): 48764160

約数和(自身を除く): 26859904

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 64, 88, 94, 128, 176, 188, 331, 352, 376, 517, 662, 704, 752, 1034, 1324, 1408, 1504, 2068, 2648, 3008, 3641, 4136, 5296, 6016, 7282, 8272, 10592, 14564, 15557, 16544, 21184, 29128, 31114, 33088, 42368, 58256, 62228, 66176, 116512, 124456, 171127, 233024, 248912, 342254, 466048, 497824, 684508, 995648, 1369016, 1991296, 2738032, 5476064, 10952128, 21904256]

約数ペア:

[(1, 21904256), (2, 10952128), (4, 5476064), (8, 2738032), (11, 1991296), (16, 1369016), (22, 995648), (32, 684508), (44, 497824), (47, 466048), (64, 342254), (88, 248912), (94, 233024), (128, 171127), (176, 124456), (188, 116512), (331, 66176), (352, 62228), (376, 58256), (517, 42368), (662, 33088), (704, 31114), (752, 29128), (1034, 21184), (1324, 16544), (1408, 15557), (1504, 14564), (2068, 10592), (2648, 8272), (3008, 7282), (3641, 6016), (4136, 5296)]