21485542

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 64

約数和(自身を含む): 39997440

約数和(自身を除く): 18511898

約数列:

[1, 2, 13, 19, 23, 26, 31, 38, 46, 61, 62, 122, 247, 299, 403, 437, 494, 589, 598, 713, 793, 806, 874, 1159, 1178, 1403, 1426, 1586, 1891, 2318, 2806, 3782, 5681, 7657, 9269, 11362, 13547, 15067, 15314, 18239, 18538, 24583, 26657, 27094, 30134, 35929, 36478, 43493, 49166, 53314, 71858, 86986, 176111, 346541, 352222, 467077, 565409, 693082, 826367, 934154, 1130818, 1652734, 10742771, 21485542]

約数ペア:

[(1, 21485542), (2, 10742771), (13, 1652734), (19, 1130818), (23, 934154), (26, 826367), (31, 693082), (38, 565409), (46, 467077), (61, 352222), (62, 346541), (122, 176111), (247, 86986), (299, 71858), (403, 53314), (437, 49166), (494, 43493), (589, 36478), (598, 35929), (713, 30134), (793, 27094), (806, 26657), (874, 24583), (1159, 18538), (1178, 18239), (1403, 15314), (1426, 15067), (1586, 13547), (1891, 11362), (2318, 9269), (2806, 7657), (3782, 5681)]