20791869385

素因数分解:

$5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{638081}}^1$

素因数の和:638126

約数の個数: 32

約数和(自身を含む): 30627936000

約数和(自身を除く): 9836066615

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 343, 665, 931, 1715, 4655, 6517, 32585, 638081, 3190405, 4466567, 12123539, 22332835, 31265969, 60617695, 84864773, 156329845, 218861783, 424323865, 594053411, 1094308915, 2970267055, 4158373877, 20791869385]

約数ペア:

[(1, 20791869385), (5, 4158373877), (7, 2970267055), (19, 1094308915), (35, 594053411), (49, 424323865), (95, 218861783), (133, 156329845), (245, 84864773), (343, 60617695), (665, 31265969), (931, 22332835), (1715, 12123539), (4655, 4466567), (6517, 3190405), (32585, 638081)]