21770903

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 8088937

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 647, 1463, 1771, 3059, 4529, 4807, 7117, 12293, 14881, 33649, 49819, 86051, 104167, 135223, 163691, 282739, 946561, 1145837, 1979173, 3110129, 21770903]

約数ペア:

[(1, 21770903), (7, 3110129), (11, 1979173), (19, 1145837), (23, 946561), (77, 282739), (133, 163691), (161, 135223), (209, 104167), (253, 86051), (437, 49819), (647, 33649), (1463, 14881), (1771, 12293), (3059, 7117), (4529, 4807)]