20385921

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{887}}^1$

素因数の和:1100

約数の個数: 16

約数和(自身を含む): 27961344

約数和(自身を除く): 7575423

約数列:

[1, 3, 47, 141, 163, 489, 887, 2661, 7661, 22983, 41689, 125067, 144581, 433743, 6795307, 20385921]

約数ペア:

[(1, 20385921), (3, 6795307), (47, 433743), (141, 144581), (163, 125067), (489, 41689), (887, 22983), (2661, 7661)]