21683620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154883}}^1$

素因数の和:154899

約数の個数: 24

約数和(自身を含む): 52041024

約数和(自身を除く): 30357404

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154883, 309766, 619532, 774415, 1084181, 1548830, 2168362, 3097660, 4336724, 5420905, 10841810, 21683620]

約数ペア:

[(1, 21683620), (2, 10841810), (4, 5420905), (5, 4336724), (7, 3097660), (10, 2168362), (14, 1548830), (20, 1084181), (28, 774415), (35, 619532), (70, 309766), (140, 154883)]