20515551

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{5647}}^1$

素因数の和:5830

約数の個数: 16

約数和(自身を含む): 31448064

約数和(自身を除く): 10932513

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 5647, 16941, 39529, 118587, 976931, 2930793, 6838517, 20515551]

約数ペア:

[(1, 20515551), (3, 6838517), (7, 2930793), (21, 976931), (173, 118587), (519, 39529), (1211, 16941), (3633, 5647)]