20938544

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{439}}^1$

素因数の和:729

約数の個数: 40

約数和(自身を含む): 44520960

約数和(自身を除く): 23582416

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 271, 439, 542, 878, 1084, 1756, 2168, 2981, 3512, 4336, 4829, 5962, 7024, 9658, 11924, 19316, 23848, 38632, 47696, 77264, 118969, 237938, 475876, 951752, 1308659, 1903504, 2617318, 5234636, 10469272, 20938544]

約数ペア:

[(1, 20938544), (2, 10469272), (4, 5234636), (8, 2617318), (11, 1903504), (16, 1308659), (22, 951752), (44, 475876), (88, 237938), (176, 118969), (271, 77264), (439, 47696), (542, 38632), (878, 23848), (1084, 19316), (1756, 11924), (2168, 9658), (2981, 7024), (3512, 5962), (4336, 4829)]