21481400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5653}}^1$

素因数の和:5688

約数の個数: 48

約数和(自身を含む): 52582200

約数和(自身を除く): 31100800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5653, 11306, 22612, 28265, 45224, 56530, 107407, 113060, 141325, 214814, 226120, 282650, 429628, 537035, 565300, 859256, 1074070, 1130600, 2148140, 2685175, 4296280, 5370350, 10740700, 21481400]

約数ペア:

[(1, 21481400), (2, 10740700), (4, 5370350), (5, 4296280), (8, 2685175), (10, 2148140), (19, 1130600), (20, 1074070), (25, 859256), (38, 565300), (40, 537035), (50, 429628), (76, 282650), (95, 226120), (100, 214814), (152, 141325), (190, 113060), (200, 107407), (380, 56530), (475, 45224), (760, 28265), (950, 22612), (1900, 11306), (3800, 5653)]