20123362880

素因数分解:

$2^6\times 5^1\times {\mathrm{317}}^1\times {\mathrm{198377}}^1$

素因数の和:198711

約数の個数: 56

約数和(自身を含む): 48070163448

約数和(自身を除く): 27946800568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 317, 320, 634, 1268, 1585, 2536, 3170, 5072, 6340, 10144, 12680, 20288, 25360, 50720, 101440, 198377, 396754, 793508, 991885, 1587016, 1983770, 3174032, 3967540, 6348064, 7935080, 12696128, 15870160, 31740320, 62885509, 63480640, 125771018, 251542036, 314427545, 503084072, 628855090, 1006168144, 1257710180, 2012336288, 2515420360, 4024672576, 5030840720, 10061681440, 20123362880]

約数ペア:

[(1, 20123362880), (2, 10061681440), (4, 5030840720), (5, 4024672576), (8, 2515420360), (10, 2012336288), (16, 1257710180), (20, 1006168144), (32, 628855090), (40, 503084072), (64, 314427545), (80, 251542036), (160, 125771018), (317, 63480640), (320, 62885509), (634, 31740320), (1268, 15870160), (1585, 12696128), (2536, 7935080), (3170, 6348064), (5072, 3967540), (6340, 3174032), (10144, 1983770), (12680, 1587016), (20288, 991885), (25360, 793508), (50720, 396754), (101440, 198377)]