20210257965

素因数分解:

$3^1\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{989971}}^1$

素因数の和:991340

約数の個数: 16

約数和(自身を含む): 32360204736

約数和(自身を除く): 12149946771

約数列:

[1, 3, 5, 15, 1361, 4083, 6805, 20415, 989971, 2969913, 4949855, 14849565, 1347350531, 4042051593, 6736752655, 20210257965]

約数ペア:

[(1, 20210257965), (3, 6736752655), (5, 4042051593), (15, 1347350531), (1361, 14849565), (4083, 4949855), (6805, 2969913), (20415, 989971)]