20817287

素因数分解:

${\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:298

約数の個数: 16

約数和(自身を含む): 22177152

約数和(自身を除く): 1359865

約数列:

[1, 47, 53, 61, 137, 2491, 2867, 3233, 6439, 7261, 8357, 151951, 341267, 392779, 442921, 20817287]

約数ペア:

[(1, 20817287), (47, 442921), (53, 392779), (61, 341267), (137, 151951), (2491, 8357), (2867, 7261), (3233, 6439)]