520513

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 16

約数和(自身を含む): 642816

約数和(自身を除く): 122303

約数列:

[1, 7, 23, 53, 61, 161, 371, 427, 1219, 1403, 3233, 8533, 9821, 22631, 74359, 520513]

約数ペア:

[(1, 520513), (7, 74359), (23, 22631), (53, 9821), (61, 8533), (161, 3233), (371, 1403), (427, 1219)]