18880085

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{17401}}^1$

素因数の和:17444

約数の個数: 16

約数和(自身を含む): 26729472

約数和(自身を除く): 7849387

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 17401, 87005, 121807, 539431, 609035, 2697155, 3776017, 18880085]

約数ペア:

[(1, 18880085), (5, 3776017), (7, 2697155), (31, 609035), (35, 539431), (155, 121807), (217, 87005), (1085, 17401)]