21945824

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:483

約数の個数: 48

約数和(自身を含む): 45405360

約数和(自身を除く): 23459536

約数列:

[1, 2, 4, 8, 16, 32, 41, 43, 82, 86, 164, 172, 328, 344, 389, 656, 688, 778, 1312, 1376, 1556, 1763, 3112, 3526, 6224, 7052, 12448, 14104, 15949, 16727, 28208, 31898, 33454, 56416, 63796, 66908, 127592, 133816, 255184, 267632, 510368, 535264, 685807, 1371614, 2743228, 5486456, 10972912, 21945824]

約数ペア:

[(1, 21945824), (2, 10972912), (4, 5486456), (8, 2743228), (16, 1371614), (32, 685807), (41, 535264), (43, 510368), (82, 267632), (86, 255184), (164, 133816), (172, 127592), (328, 66908), (344, 63796), (389, 56416), (656, 33454), (688, 31898), (778, 28208), (1312, 16727), (1376, 15949), (1556, 14104), (1763, 12448), (3112, 7052), (3526, 6224)]