21720952

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1181}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 47161800

約数和(自身を除く): 25440848

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 121, 152, 209, 242, 418, 484, 836, 968, 1181, 1672, 2299, 2362, 4598, 4724, 9196, 9448, 12991, 18392, 22439, 25982, 44878, 51964, 89756, 103928, 142901, 179512, 246829, 285802, 493658, 571604, 987316, 1143208, 1974632, 2715119, 5430238, 10860476, 21720952]

約数ペア:

[(1, 21720952), (2, 10860476), (4, 5430238), (8, 2715119), (11, 1974632), (19, 1143208), (22, 987316), (38, 571604), (44, 493658), (76, 285802), (88, 246829), (121, 179512), (152, 142901), (209, 103928), (242, 89756), (418, 51964), (484, 44878), (836, 25982), (968, 22439), (1181, 18392), (1672, 12991), (2299, 9448), (2362, 9196), (4598, 4724)]