21563696

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{761}}^1$

素因数の和:810

約数の個数: 80

約数和(自身を含む): 54425088

約数和(自身を除く): 32861392

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 44, 46, 56, 77, 88, 92, 112, 154, 161, 176, 184, 253, 308, 322, 368, 506, 616, 644, 761, 1012, 1232, 1288, 1522, 1771, 2024, 2576, 3044, 3542, 4048, 5327, 6088, 7084, 8371, 10654, 12176, 14168, 16742, 17503, 21308, 28336, 33484, 35006, 42616, 58597, 66968, 70012, 85232, 117194, 122521, 133936, 140024, 192533, 234388, 245042, 280048, 385066, 468776, 490084, 770132, 937552, 980168, 1347731, 1540264, 1960336, 2695462, 3080528, 5390924, 10781848, 21563696]

約数ペア:

[(1, 21563696), (2, 10781848), (4, 5390924), (7, 3080528), (8, 2695462), (11, 1960336), (14, 1540264), (16, 1347731), (22, 980168), (23, 937552), (28, 770132), (44, 490084), (46, 468776), (56, 385066), (77, 280048), (88, 245042), (92, 234388), (112, 192533), (154, 140024), (161, 133936), (176, 122521), (184, 117194), (253, 85232), (308, 70012), (322, 66968), (368, 58597), (506, 42616), (616, 35006), (644, 33484), (761, 28336), (1012, 21308), (1232, 17503), (1288, 16742), (1522, 14168), (1771, 12176), (2024, 10654), (2576, 8371), (3044, 7084), (3542, 6088), (4048, 5327)]