20881404

素因数分解:

$2^2\times 3^2\times {\mathrm{211}}^1\times {\mathrm{2749}}^1$

素因数の和:2970

約数の個数: 36

約数和(自身を含む): 53053000

約数和(自身を除く): 32171596

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 211, 422, 633, 844, 1266, 1899, 2532, 2749, 3798, 5498, 7596, 8247, 10996, 16494, 24741, 32988, 49482, 98964, 580039, 1160078, 1740117, 2320156, 3480234, 5220351, 6960468, 10440702, 20881404]

約数ペア:

[(1, 20881404), (2, 10440702), (3, 6960468), (4, 5220351), (6, 3480234), (9, 2320156), (12, 1740117), (18, 1160078), (36, 580039), (211, 98964), (422, 49482), (633, 32988), (844, 24741), (1266, 16494), (1899, 10996), (2532, 8247), (2749, 7596), (3798, 5498)]