72660021

素因数分解:

$3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{21227}}^1$

素因数の和:21400

約数の個数: 16

約数和(自身を含む): 111404544

約数和(自身を除く): 38744523

約数列:

[1, 3, 7, 21, 163, 489, 1141, 3423, 21227, 63681, 148589, 445767, 3460001, 10380003, 24220007, 72660021]

約数ペア:

[(1, 72660021), (3, 24220007), (7, 10380003), (21, 3460001), (163, 445767), (489, 148589), (1141, 63681), (3423, 21227)]