21009856

素因数分解:

$2^6\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2039}}^1$

素因数の和:2081

約数の個数: 56

約数和(自身を含む): 49743360

約数和(自身を除く): 28733504

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 161, 184, 224, 322, 368, 448, 644, 736, 1288, 1472, 2039, 2576, 4078, 5152, 8156, 10304, 14273, 16312, 28546, 32624, 46897, 57092, 65248, 93794, 114184, 130496, 187588, 228368, 328279, 375176, 456736, 656558, 750352, 913472, 1313116, 1500704, 2626232, 3001408, 5252464, 10504928, 21009856]

約数ペア:

[(1, 21009856), (2, 10504928), (4, 5252464), (7, 3001408), (8, 2626232), (14, 1500704), (16, 1313116), (23, 913472), (28, 750352), (32, 656558), (46, 456736), (56, 375176), (64, 328279), (92, 228368), (112, 187588), (161, 130496), (184, 114184), (224, 93794), (322, 65248), (368, 57092), (448, 46897), (644, 32624), (736, 28546), (1288, 16312), (1472, 14273), (2039, 10304), (2576, 8156), (4078, 5152)]