19930981

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{541}}^1$

素因数の和:844

約数の個数: 16

約数和(自身を含む): 24108160

約数和(自身を除く): 4177179

約数列:

[1, 7, 19, 133, 277, 541, 1939, 3787, 5263, 10279, 36841, 71953, 149857, 1048999, 2847283, 19930981]

約数ペア:

[(1, 19930981), (7, 2847283), (19, 1048999), (133, 149857), (277, 71953), (541, 36841), (1939, 10279), (3787, 5263)]