21335993

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2719}}^1$

素因数の和:2804

約数の個数: 16

約数和(自身を含む): 26112000

約数和(自身を除く): 4776007

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2719, 7847, 19033, 51661, 160421, 361627, 1122947, 3047999, 21335993]

約数ペア:

[(1, 21335993), (7, 3047999), (19, 1122947), (59, 361627), (133, 160421), (413, 51661), (1121, 19033), (2719, 7847)]