20295457

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 25714752

約数和(自身を除く): 5419295

約数列:

[1, 7, 13, 49, 91, 151, 211, 637, 1057, 1477, 1963, 2743, 7399, 10339, 13741, 19201, 31861, 96187, 134407, 223027, 414193, 1561189, 2899351, 20295457]

約数ペア:

[(1, 20295457), (7, 2899351), (13, 1561189), (49, 414193), (91, 223027), (151, 134407), (211, 96187), (637, 31861), (1057, 19201), (1477, 13741), (1963, 10339), (2743, 7399)]