21509376

素因数分解:

$2^8\times 3^1\times 7^1\times {\mathrm{4001}}^1$

素因数の和:4027

約数の個数: 72

約数和(自身を含む): 65440704

約数和(自身を除く): 43931328

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 84, 96, 112, 128, 168, 192, 224, 256, 336, 384, 448, 672, 768, 896, 1344, 1792, 2688, 4001, 5376, 8002, 12003, 16004, 24006, 28007, 32008, 48012, 56014, 64016, 84021, 96024, 112028, 128032, 168042, 192048, 224056, 256064, 336084, 384096, 448112, 512128, 672168, 768192, 896224, 1024256, 1344336, 1536384, 1792448, 2688672, 3072768, 3584896, 5377344, 7169792, 10754688, 21509376]

約数ペア:

[(1, 21509376), (2, 10754688), (3, 7169792), (4, 5377344), (6, 3584896), (7, 3072768), (8, 2688672), (12, 1792448), (14, 1536384), (16, 1344336), (21, 1024256), (24, 896224), (28, 768192), (32, 672168), (42, 512128), (48, 448112), (56, 384096), (64, 336084), (84, 256064), (96, 224056), (112, 192048), (128, 168042), (168, 128032), (192, 112028), (224, 96024), (256, 84021), (336, 64016), (384, 56014), (448, 48012), (672, 32008), (768, 28007), (896, 24006), (1344, 16004), (1792, 12003), (2688, 8002), (4001, 5376)]