21244685

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7883}}^1$

素因数の和:7913

約数の個数: 24

約数和(自身を含む): 32355936

約数和(自身を除く): 11111251

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7883, 39415, 55181, 86713, 275905, 386267, 433565, 606991, 1931335, 3034955, 4248937, 21244685]

約数ペア:

[(1, 21244685), (5, 4248937), (7, 3034955), (11, 1931335), (35, 606991), (49, 433565), (55, 386267), (77, 275905), (245, 86713), (385, 55181), (539, 39415), (2695, 7883)]