20297880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{56383}}^1$

素因数の和:56400

約数の個数: 48

約数和(自身を含む): 65969280

約数和(自身を除く): 45671400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 56383, 112766, 169149, 225532, 281915, 338298, 451064, 507447, 563830, 676596, 845745, 1014894, 1127660, 1353192, 1691490, 2029788, 2255320, 2537235, 3382980, 4059576, 5074470, 6765960, 10148940, 20297880]

約数ペア:

[(1, 20297880), (2, 10148940), (3, 6765960), (4, 5074470), (5, 4059576), (6, 3382980), (8, 2537235), (9, 2255320), (10, 2029788), (12, 1691490), (15, 1353192), (18, 1127660), (20, 1014894), (24, 845745), (30, 676596), (36, 563830), (40, 507447), (45, 451064), (60, 338298), (72, 281915), (90, 225532), (120, 169149), (180, 112766), (360, 56383)]