20817503

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{373}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 26093232

約数和(自身を除く): 5275729

約数列:

[1, 7, 17, 49, 67, 119, 373, 469, 833, 1139, 2611, 3283, 6341, 7973, 18277, 24991, 44387, 55811, 174937, 310709, 424847, 1224559, 2973929, 20817503]

約数ペア:

[(1, 20817503), (7, 2973929), (17, 1224559), (49, 424847), (67, 310709), (119, 174937), (373, 55811), (469, 44387), (833, 24991), (1139, 18277), (2611, 7973), (3283, 6341)]