21849856

素因数分解:

$2^8\times 7^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 50772960

約数和(自身を除く): 28923104

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 89, 112, 128, 137, 178, 224, 256, 274, 356, 448, 548, 623, 712, 896, 959, 1096, 1246, 1424, 1792, 1918, 2192, 2492, 2848, 3836, 4384, 4984, 5696, 7672, 8768, 9968, 11392, 12193, 15344, 17536, 19936, 22784, 24386, 30688, 35072, 39872, 48772, 61376, 79744, 85351, 97544, 122752, 159488, 170702, 195088, 245504, 341404, 390176, 682808, 780352, 1365616, 1560704, 2731232, 3121408, 5462464, 10924928, 21849856]

約数ペア:

[(1, 21849856), (2, 10924928), (4, 5462464), (7, 3121408), (8, 2731232), (14, 1560704), (16, 1365616), (28, 780352), (32, 682808), (56, 390176), (64, 341404), (89, 245504), (112, 195088), (128, 170702), (137, 159488), (178, 122752), (224, 97544), (256, 85351), (274, 79744), (356, 61376), (448, 48772), (548, 39872), (623, 35072), (712, 30688), (896, 24386), (959, 22784), (1096, 19936), (1246, 17536), (1424, 15344), (1792, 12193), (1918, 11392), (2192, 9968), (2492, 8768), (2848, 7672), (3836, 5696), (4384, 4984)]