21185724

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1409}}^1$

素因数の和:1602

約数の個数: 48

約数和(自身を含む): 56851200

約数和(自身を除く): 35665476

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 179, 358, 537, 716, 1074, 1253, 1409, 2148, 2506, 2818, 3759, 4227, 5012, 5636, 7518, 8454, 9863, 15036, 16908, 19726, 29589, 39452, 59178, 118356, 252211, 504422, 756633, 1008844, 1513266, 1765477, 3026532, 3530954, 5296431, 7061908, 10592862, 21185724]

約数ペア:

[(1, 21185724), (2, 10592862), (3, 7061908), (4, 5296431), (6, 3530954), (7, 3026532), (12, 1765477), (14, 1513266), (21, 1008844), (28, 756633), (42, 504422), (84, 252211), (179, 118356), (358, 59178), (537, 39452), (716, 29589), (1074, 19726), (1253, 16908), (1409, 15036), (2148, 9863), (2506, 8454), (2818, 7518), (3759, 5636), (4227, 5012)]