30990393

素因数分解:

$3^2\times 7^3\times {\mathrm{10039}}^1$

素因数の和:10066

約数の個数: 24

約数和(自身を含む): 52208000

約数和(自身を除く): 21217607

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 10039, 30117, 70273, 90351, 210819, 491911, 632457, 1475733, 3443377, 4427199, 10330131, 30990393]

約数ペア:

[(1, 30990393), (3, 10330131), (7, 4427199), (9, 3443377), (21, 1475733), (49, 632457), (63, 491911), (147, 210819), (343, 90351), (441, 70273), (1029, 30117), (3087, 10039)]