21345480290

素因数分解:

$2^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{19949047}}^1$

素因数の和:19949161

約数の個数: 16

約数和(自身を含む): 38780949312

約数和(自身を除く): 17435469022

約数列:

[1, 2, 5, 10, 107, 214, 535, 1070, 19949047, 39898094, 99745235, 199490470, 2134548029, 4269096058, 10672740145, 21345480290]

約数ペア:

[(1, 21345480290), (2, 10672740145), (5, 4269096058), (10, 2134548029), (107, 199490470), (214, 99745235), (535, 39898094), (1070, 19949047)]