16398640

素因数分解:

$2^4\times 5^1\times {\mathrm{204983}}^1$

素因数の和:204996

約数の個数: 20

約数和(自身を含む): 38127024

約数和(自身を除く): 21728384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 204983, 409966, 819932, 1024915, 1639864, 2049830, 3279728, 4099660, 8199320, 16398640]

約数ペア:

[(1, 16398640), (2, 8199320), (4, 4099660), (5, 3279728), (8, 2049830), (10, 1639864), (16, 1024915), (20, 819932), (40, 409966), (80, 204983)]