21001099

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{587}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4400501

約数列:

[1, 7, 19, 133, 269, 587, 1883, 4109, 5111, 11153, 35777, 78071, 157903, 1105321, 3000157, 21001099]

約数ペア:

[(1, 21001099), (7, 3000157), (19, 1105321), (133, 157903), (269, 78071), (587, 35777), (1883, 11153), (4109, 5111)]