28398320

素因数分解:

$2^4\times 5^1\times {\mathrm{354979}}^1$

素因数の和:354992

約数の個数: 20

約数和(自身を含む): 66026280

約数和(自身を除く): 37627960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354979, 709958, 1419916, 1774895, 2839832, 3549790, 5679664, 7099580, 14199160, 28398320]

約数ペア:

[(1, 28398320), (2, 14199160), (4, 7099580), (5, 5679664), (8, 3549790), (10, 2839832), (16, 1774895), (20, 1419916), (40, 709958), (80, 354979)]