20587105

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7639}}^1$

素因数の和:7669

約数の個数: 24

約数和(自身を含む): 31354560

約数和(自身を除く): 10767455

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7639, 38195, 53473, 84029, 267365, 374311, 420145, 588203, 1871555, 2941015, 4117421, 20587105]

約数ペア:

[(1, 20587105), (5, 4117421), (7, 2941015), (11, 1871555), (35, 588203), (49, 420145), (55, 374311), (77, 267365), (245, 84029), (385, 53473), (539, 38195), (2695, 7639)]