20201769

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2411}}^1$

素因数の和:2450

約数の個数: 36

約数和(自身を含む): 35745840

約数和(自身を除く): 15544071

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2411, 2793, 7233, 8379, 16877, 21699, 45809, 50631, 118139, 137427, 151893, 320663, 354417, 412281, 961989, 1063251, 2244641, 2885967, 6733923, 20201769]

約数ペア:

[(1, 20201769), (3, 6733923), (7, 2885967), (9, 2244641), (19, 1063251), (21, 961989), (49, 412281), (57, 354417), (63, 320663), (133, 151893), (147, 137427), (171, 118139), (399, 50631), (441, 45809), (931, 21699), (1197, 16877), (2411, 8379), (2793, 7233)]