21167972329

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1\times {\mathrm{4451}}^1$

素因数の和:4861

約数の個数: 32

約数和(自身を含む): 25575137280

約数和(自身を除く): 4407164951

約数列:

[1, 7, 23, 109, 161, 271, 763, 1897, 2507, 4451, 6233, 17549, 29539, 31157, 43631, 102373, 206773, 485159, 679397, 716611, 1206221, 3396113, 4755779, 8443547, 11158657, 27743083, 78110599, 131478089, 194201581, 920346623, 3023996047, 21167972329]

約数ペア:

[(1, 21167972329), (7, 3023996047), (23, 920346623), (109, 194201581), (161, 131478089), (271, 78110599), (763, 27743083), (1897, 11158657), (2507, 8443547), (4451, 4755779), (6233, 3396113), (17549, 1206221), (29539, 716611), (31157, 679397), (43631, 485159), (102373, 206773)]