20419763

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:495

約数の個数: 24

約数和(自身を含む): 25947936

約数和(自身を除く): 5528173

約数列:

[1, 7, 13, 41, 91, 169, 287, 421, 533, 1183, 2947, 3731, 5473, 6929, 17261, 38311, 48503, 71149, 120827, 224393, 498043, 1570751, 2917109, 20419763]

約数ペア:

[(1, 20419763), (7, 2917109), (13, 1570751), (41, 498043), (91, 224393), (169, 120827), (287, 71149), (421, 48503), (533, 38311), (1183, 17261), (2947, 6929), (3731, 5473)]