21016513

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{593}}^1$

素因数の和:744

約数の個数: 16

約数和(自身を含む): 24748416

約数和(自身を除く): 3731903

約数列:

[1, 7, 61, 83, 427, 581, 593, 4151, 5063, 35441, 36173, 49219, 253211, 344533, 3002359, 21016513]

約数ペア:

[(1, 21016513), (7, 3002359), (61, 344533), (83, 253211), (427, 49219), (581, 36173), (593, 35441), (4151, 5063)]