20745285

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{2131}}^1$

素因数の和:2209

約数の個数: 32

約数和(自身を含む): 36840960

約数和(自身を除く): 16095675

約数列:

[1, 3, 5, 11, 15, 33, 55, 59, 165, 177, 295, 649, 885, 1947, 2131, 3245, 6393, 9735, 10655, 23441, 31965, 70323, 117205, 125729, 351615, 377187, 628645, 1383019, 1885935, 4149057, 6915095, 20745285]

約数ペア:

[(1, 20745285), (3, 6915095), (5, 4149057), (11, 1885935), (15, 1383019), (33, 628645), (55, 377187), (59, 351615), (165, 125729), (177, 117205), (295, 70323), (649, 31965), (885, 23441), (1947, 10655), (2131, 9735), (3245, 6393)]