20439321

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8179}}^1$

素因数の和:8213

約数の個数: 24

約数和(自身を含む): 33570720

約数和(自身を除く): 13131399

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8179, 24537, 57253, 139043, 171759, 400771, 417129, 973301, 1202313, 2919903, 6813107, 20439321]

約数ペア:

[(1, 20439321), (3, 6813107), (7, 2919903), (17, 1202313), (21, 973301), (49, 417129), (51, 400771), (119, 171759), (147, 139043), (357, 57253), (833, 24537), (2499, 8179)]