18881465

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{661}}^1$

素因数の和:892

約数の個数: 16

約数和(自身を含む): 23593680

約数和(自身を除く): 4712215

約数列:

[1, 5, 29, 145, 197, 661, 985, 3305, 5713, 19169, 28565, 95845, 130217, 651085, 3776293, 18881465]

約数ペア:

[(1, 18881465), (5, 3776293), (29, 651085), (145, 130217), (197, 95845), (661, 28565), (985, 19169), (3305, 5713)]