21097616

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1109}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 43356600

約数和(自身を除く): 22258984

約数列:

[1, 2, 4, 8, 16, 29, 41, 58, 82, 116, 164, 232, 328, 464, 656, 1109, 1189, 2218, 2378, 4436, 4756, 8872, 9512, 17744, 19024, 32161, 45469, 64322, 90938, 128644, 181876, 257288, 363752, 514576, 727504, 1318601, 2637202, 5274404, 10548808, 21097616]

約数ペア:

[(1, 21097616), (2, 10548808), (4, 5274404), (8, 2637202), (16, 1318601), (29, 727504), (41, 514576), (58, 363752), (82, 257288), (116, 181876), (164, 128644), (232, 90938), (328, 64322), (464, 45469), (656, 32161), (1109, 19024), (1189, 17744), (2218, 9512), (2378, 8872), (4436, 4756)]