19894511

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 25087104

約数和(自身を除く): 5192593

約数列:

[1, 7, 13, 67, 91, 169, 251, 469, 871, 1183, 1757, 3263, 6097, 11323, 16817, 22841, 42419, 79261, 117719, 218621, 296933, 1530347, 2842073, 19894511]

約数ペア:

[(1, 19894511), (7, 2842073), (13, 1530347), (67, 296933), (91, 218621), (169, 117719), (251, 79261), (469, 42419), (871, 22841), (1183, 16817), (1757, 11323), (3263, 6097)]