20512219

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{4253}}^1$

素因数の和:4326

約数の個数: 16

約数和(自身を含む): 25728192

約数和(自身を除く): 5215973

約数列:

[1, 7, 13, 53, 91, 371, 689, 4253, 4823, 29771, 55289, 225409, 387023, 1577863, 2930317, 20512219]

約数ペア:

[(1, 20512219), (7, 2930317), (13, 1577863), (53, 387023), (91, 225409), (371, 55289), (689, 29771), (4253, 4823)]