21418731

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{541}}^1$

素因数の和:683

約数の個数: 24

約数和(自身を含む): 31960656

約数和(自身を除く): 10541925

約数列:

[1, 3, 9, 53, 83, 159, 249, 477, 541, 747, 1623, 4399, 4869, 13197, 28673, 39591, 44903, 86019, 134709, 258057, 404127, 2379859, 7139577, 21418731]

約数ペア:

[(1, 21418731), (3, 7139577), (9, 2379859), (53, 404127), (83, 258057), (159, 134709), (249, 86019), (477, 44903), (541, 39591), (747, 28673), (1623, 13197), (4399, 4869)]