19858962020

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1549061}}^1$

素因数の和:1549711

約数の個数: 24

約数和(自身を含む): 41768907768

約数和(自身を除く): 21909945748

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 1549061, 3098122, 6196244, 7745305, 15490610, 30981220, 992948101, 1985896202, 3971792404, 4964740505, 9929481010, 19858962020]

約数ペア:

[(1, 19858962020), (2, 9929481010), (4, 4964740505), (5, 3971792404), (10, 1985896202), (20, 992948101), (641, 30981220), (1282, 15490610), (2564, 7745305), (3205, 6196244), (6410, 3098122), (12820, 1549061)]