21225540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:637

約数の個数: 96

約数和(自身を含む): 68753664

約数和(自身を除く): 47528124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 97, 105, 140, 194, 210, 291, 388, 420, 485, 521, 582, 679, 970, 1042, 1164, 1358, 1455, 1563, 1940, 2037, 2084, 2605, 2716, 2910, 3126, 3395, 3647, 4074, 5210, 5820, 6252, 6790, 7294, 7815, 8148, 10185, 10420, 10941, 13580, 14588, 15630, 18235, 20370, 21882, 31260, 36470, 40740, 43764, 50537, 54705, 72940, 101074, 109410, 151611, 202148, 218820, 252685, 303222, 353759, 505370, 606444, 707518, 758055, 1010740, 1061277, 1415036, 1516110, 1768795, 2122554, 3032220, 3537590, 4245108, 5306385, 7075180, 10612770, 21225540]

約数ペア:

[(1, 21225540), (2, 10612770), (3, 7075180), (4, 5306385), (5, 4245108), (6, 3537590), (7, 3032220), (10, 2122554), (12, 1768795), (14, 1516110), (15, 1415036), (20, 1061277), (21, 1010740), (28, 758055), (30, 707518), (35, 606444), (42, 505370), (60, 353759), (70, 303222), (84, 252685), (97, 218820), (105, 202148), (140, 151611), (194, 109410), (210, 101074), (291, 72940), (388, 54705), (420, 50537), (485, 43764), (521, 40740), (582, 36470), (679, 31260), (970, 21882), (1042, 20370), (1164, 18235), (1358, 15630), (1455, 14588), (1563, 13580), (1940, 10941), (2037, 10420), (2084, 10185), (2605, 8148), (2716, 7815), (2910, 7294), (3126, 6790), (3395, 6252), (3647, 5820), (4074, 5210)]