20189575

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2683}}^1$

素因数の和:2743

約数の個数: 24

約数和(自身を含む): 29287808

約数和(自身を除く): 9098233

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2683, 7525, 13415, 18781, 67075, 93905, 115369, 469525, 576845, 807583, 2884225, 4037915, 20189575]

約数ペア:

[(1, 20189575), (5, 4037915), (7, 2884225), (25, 807583), (35, 576845), (43, 469525), (175, 115369), (215, 93905), (301, 67075), (1075, 18781), (1505, 13415), (2683, 7525)]