19719007

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{751}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 25604096

約数和(自身を除く): 5885089

約数列:

[1, 7, 11, 31, 77, 121, 217, 341, 751, 847, 2387, 3751, 5257, 8261, 23281, 26257, 57827, 90871, 162967, 256091, 636097, 1792637, 2817001, 19719007]

約数ペア:

[(1, 19719007), (7, 2817001), (11, 1792637), (31, 636097), (77, 256091), (121, 162967), (217, 90871), (341, 57827), (751, 26257), (847, 23281), (2387, 8261), (3751, 5257)]