21109620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50261}}^1$

素因数の和:50280

約数の個数: 48

約数和(自身を含む): 67552128

約数和(自身を除く): 46442508

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50261, 100522, 150783, 201044, 251305, 301566, 351827, 502610, 603132, 703654, 753915, 1005220, 1055481, 1407308, 1507830, 1759135, 2110962, 3015660, 3518270, 4221924, 5277405, 7036540, 10554810, 21109620]

約数ペア:

[(1, 21109620), (2, 10554810), (3, 7036540), (4, 5277405), (5, 4221924), (6, 3518270), (7, 3015660), (10, 2110962), (12, 1759135), (14, 1507830), (15, 1407308), (20, 1055481), (21, 1005220), (28, 753915), (30, 703654), (35, 603132), (42, 502610), (60, 351827), (70, 301566), (84, 251305), (105, 201044), (140, 150783), (210, 100522), (420, 50261)]