20212569

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:266

約数の個数: 36

約数和(自身を含む): 32173596

約数和(自身を除く): 11961027

約数列:

[1, 3, 9, 13, 39, 97, 117, 137, 169, 291, 411, 507, 873, 1233, 1261, 1521, 1781, 3783, 5343, 11349, 13289, 16029, 16393, 23153, 39867, 49179, 69459, 119601, 147537, 172757, 208377, 518271, 1554813, 2245841, 6737523, 20212569]

約数ペア:

[(1, 20212569), (3, 6737523), (9, 2245841), (13, 1554813), (39, 518271), (97, 208377), (117, 172757), (137, 147537), (169, 119601), (291, 69459), (411, 49179), (507, 39867), (873, 23153), (1233, 16393), (1261, 16029), (1521, 13289), (1781, 11349), (3783, 5343)]