21174808

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{43391}}^1$

素因数の和:43458

約数の個数: 16

約数和(自身を含む): 40354560

約数和(自身を除く): 19179752

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 43391, 86782, 173564, 347128, 2646851, 5293702, 10587404, 21174808]

約数ペア:

[(1, 21174808), (2, 10587404), (4, 5293702), (8, 2646851), (61, 347128), (122, 173564), (244, 86782), (488, 43391)]