20098281

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2909}}^1$

素因数の和:2973

約数の個数: 24

約数和(自身を含む): 31847040

約数和(自身を除く): 11748759

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2909, 6909, 8727, 20363, 61089, 136723, 142541, 410169, 427623, 957061, 2871183, 6699427, 20098281]

約数ペア:

[(1, 20098281), (3, 6699427), (7, 2871183), (21, 957061), (47, 427623), (49, 410169), (141, 142541), (147, 136723), (329, 61089), (987, 20363), (2303, 8727), (2909, 6909)]