21399816

素因数分解:

$2^3\times 3^1\times {\mathrm{891659}}^1$

素因数の和:891668

約数の個数: 16

約数和(自身を含む): 53499600

約数和(自身を除く): 32099784

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 891659, 1783318, 2674977, 3566636, 5349954, 7133272, 10699908, 21399816]

約数ペア:

[(1, 21399816), (2, 10699908), (3, 7133272), (4, 5349954), (6, 3566636), (8, 2674977), (12, 1783318), (24, 891659)]