21791168

素因数分解:

$2^6\times 7^1\times {\mathrm{127}}^1\times {\mathrm{383}}^1$

素因数の和:529

約数の個数: 56

約数和(自身を含む): 49938432

約数和(自身を除く): 28147264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 127, 224, 254, 383, 448, 508, 766, 889, 1016, 1532, 1778, 2032, 2681, 3064, 3556, 4064, 5362, 6128, 7112, 8128, 10724, 12256, 14224, 21448, 24512, 28448, 42896, 48641, 56896, 85792, 97282, 171584, 194564, 340487, 389128, 680974, 778256, 1361948, 1556512, 2723896, 3113024, 5447792, 10895584, 21791168]

約数ペア:

[(1, 21791168), (2, 10895584), (4, 5447792), (7, 3113024), (8, 2723896), (14, 1556512), (16, 1361948), (28, 778256), (32, 680974), (56, 389128), (64, 340487), (112, 194564), (127, 171584), (224, 97282), (254, 85792), (383, 56896), (448, 48641), (508, 42896), (766, 28448), (889, 24512), (1016, 21448), (1532, 14224), (1778, 12256), (2032, 10724), (2681, 8128), (3064, 7112), (3556, 6128), (4064, 5362)]