20816690

素因数分解:

$2^1\times 5^1\times {\mathrm{631}}^1\times {\mathrm{3299}}^1$

素因数の和:3937

約数の個数: 16

約数和(自身を含む): 37540800

約数和(自身を除く): 16724110

約数列:

[1, 2, 5, 10, 631, 1262, 3155, 3299, 6310, 6598, 16495, 32990, 2081669, 4163338, 10408345, 20816690]

約数ペア:

[(1, 20816690), (2, 10408345), (5, 4163338), (10, 2081669), (631, 32990), (1262, 16495), (3155, 6598), (3299, 6310)]