18979021

素因数分解:

${\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:464

約数の個数: 16

約数和(自身を含む): 21014640

約数和(自身を除く): 2035619

約数列:

[1, 17, 29, 137, 281, 493, 2329, 3973, 4777, 8149, 38497, 67541, 138533, 654449, 1116413, 18979021]

約数ペア:

[(1, 18979021), (17, 1116413), (29, 654449), (137, 138533), (281, 67541), (493, 38497), (2329, 8149), (3973, 4777)]