20856976

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2551}}^1$

素因数の和:2639

約数の個数: 40

約数和(自身を含む): 46834304

約数和(自身を除く): 25977328

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2551, 4088, 5102, 8176, 10204, 17857, 20408, 35714, 40816, 71428, 142856, 186223, 285712, 372446, 744892, 1303561, 1489784, 2607122, 2979568, 5214244, 10428488, 20856976]

約数ペア:

[(1, 20856976), (2, 10428488), (4, 5214244), (7, 2979568), (8, 2607122), (14, 1489784), (16, 1303561), (28, 744892), (56, 372446), (73, 285712), (112, 186223), (146, 142856), (292, 71428), (511, 40816), (584, 35714), (1022, 20408), (1168, 17857), (2044, 10204), (2551, 8176), (4088, 5102)]