20781348

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3389}}^1$

素因数の和:3476

約数の個数: 48

約数和(自身を含む): 56192640

約数和(自身を除く): 35411292

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 73, 84, 146, 219, 292, 438, 511, 876, 1022, 1533, 2044, 3066, 3389, 6132, 6778, 10167, 13556, 20334, 23723, 40668, 47446, 71169, 94892, 142338, 247397, 284676, 494794, 742191, 989588, 1484382, 1731779, 2968764, 3463558, 5195337, 6927116, 10390674, 20781348]

約数ペア:

[(1, 20781348), (2, 10390674), (3, 6927116), (4, 5195337), (6, 3463558), (7, 2968764), (12, 1731779), (14, 1484382), (21, 989588), (28, 742191), (42, 494794), (73, 284676), (84, 247397), (146, 142338), (219, 94892), (292, 71169), (438, 47446), (511, 40668), (876, 23723), (1022, 20334), (1533, 13556), (2044, 10167), (3066, 6778), (3389, 6132)]