18220321

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:504

約数の個数: 16

約数和(自身を含む): 21386880

約数和(自身を除く): 3166559

約数列:

[1, 7, 59, 157, 281, 413, 1099, 1967, 9263, 16579, 44117, 64841, 116053, 308819, 2602903, 18220321]

約数ペア:

[(1, 18220321), (7, 2602903), (59, 308819), (157, 116053), (281, 64841), (413, 44117), (1099, 16579), (1967, 9263)]