21118456

素因数分解:

$2^3\times {\mathrm{173}}^1\times {\mathrm{15259}}^1$

素因数の和:15438

約数の個数: 16

約数和(自身を含む): 39828600

約数和(自身を除く): 18710144

約数列:

[1, 2, 4, 8, 173, 346, 692, 1384, 15259, 30518, 61036, 122072, 2639807, 5279614, 10559228, 21118456]

約数ペア:

[(1, 21118456), (2, 10559228), (4, 5279614), (8, 2639807), (173, 122072), (346, 61036), (692, 30518), (1384, 15259)]