20799536

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:381

約数の個数: 40

約数和(自身を含む): 41561328

約数和(自身を除く): 20761792

約数列:

[1, 2, 4, 8, 16, 61, 101, 122, 202, 211, 244, 404, 422, 488, 808, 844, 976, 1616, 1688, 3376, 6161, 12322, 12871, 21311, 24644, 25742, 42622, 49288, 51484, 85244, 98576, 102968, 170488, 205936, 340976, 1299971, 2599942, 5199884, 10399768, 20799536]

約数ペア:

[(1, 20799536), (2, 10399768), (4, 5199884), (8, 2599942), (16, 1299971), (61, 340976), (101, 205936), (122, 170488), (202, 102968), (211, 98576), (244, 85244), (404, 51484), (422, 49288), (488, 42622), (808, 25742), (844, 24644), (976, 21311), (1616, 12871), (1688, 12322), (3376, 6161)]