20901513

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1559}}^1$

素因数の和:1712

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7927287

約数列:

[1, 3, 41, 109, 123, 327, 1559, 4469, 4677, 13407, 63919, 169931, 191757, 509793, 6967171, 20901513]

約数ペア:

[(1, 20901513), (3, 6967171), (41, 509793), (109, 191757), (123, 169931), (327, 63919), (1559, 13407), (4469, 4677)]