211977535

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{17761}}^1$

素因数の和:17815

約数の個数: 32

約数和(自身を含む): 327389184

約数和(自身を除く): 115411649

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 2387, 11935, 17761, 88805, 124327, 195371, 550591, 621635, 976855, 1367597, 2752955, 3854137, 6056501, 6837985, 19270685, 30282505, 42395507, 211977535]

約数ペア:

[(1, 211977535), (5, 42395507), (7, 30282505), (11, 19270685), (31, 6837985), (35, 6056501), (55, 3854137), (77, 2752955), (155, 1367597), (217, 976855), (341, 621635), (385, 550591), (1085, 195371), (1705, 124327), (2387, 88805), (11935, 17761)]