21491904

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{15991}}^1$

素因数の和:16013

約数の個数: 56

約数和(自身を含む): 64991488

約数和(自身を除く): 43499584

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 84, 96, 112, 168, 192, 224, 336, 448, 672, 1344, 15991, 31982, 47973, 63964, 95946, 111937, 127928, 191892, 223874, 255856, 335811, 383784, 447748, 511712, 671622, 767568, 895496, 1023424, 1343244, 1535136, 1790992, 2686488, 3070272, 3581984, 5372976, 7163968, 10745952, 21491904]

約数ペア:

[(1, 21491904), (2, 10745952), (3, 7163968), (4, 5372976), (6, 3581984), (7, 3070272), (8, 2686488), (12, 1790992), (14, 1535136), (16, 1343244), (21, 1023424), (24, 895496), (28, 767568), (32, 671622), (42, 511712), (48, 447748), (56, 383784), (64, 335811), (84, 255856), (96, 223874), (112, 191892), (168, 127928), (192, 111937), (224, 95946), (336, 63964), (448, 47973), (672, 31982), (1344, 15991)]