28398640

素因数分解:

$2^4\times 5^1\times {\mathrm{354983}}^1$

素因数の和:354996

約数の個数: 20

約数和(自身を含む): 66027024

約数和(自身を除く): 37628384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354983, 709966, 1419932, 1774915, 2839864, 3549830, 5679728, 7099660, 14199320, 28398640]

約数ペア:

[(1, 28398640), (2, 14199320), (4, 7099660), (5, 5679728), (8, 3549830), (10, 2839864), (16, 1774915), (20, 1419932), (40, 709966), (80, 354983)]