21506017

素因数分解:

${\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 23969232

約数和(自身を除く): 2463215

約数列:

[1, 13, 41, 157, 257, 533, 2041, 3341, 6437, 10537, 40349, 83681, 136981, 524537, 1654309, 21506017]

約数ペア:

[(1, 21506017), (13, 1654309), (41, 524537), (157, 136981), (257, 83681), (533, 40349), (2041, 10537), (3341, 6437)]