20506528

素因数分解:

$2^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2129}}^1$

素因数の和:2189

約数の個数: 48

約数和(自身を含む): 47234880

約数和(自身を除く): 26728352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 86, 112, 172, 224, 301, 344, 602, 688, 1204, 1376, 2129, 2408, 4258, 4816, 8516, 9632, 14903, 17032, 29806, 34064, 59612, 68128, 91547, 119224, 183094, 238448, 366188, 476896, 640829, 732376, 1281658, 1464752, 2563316, 2929504, 5126632, 10253264, 20506528]

約数ペア:

[(1, 20506528), (2, 10253264), (4, 5126632), (7, 2929504), (8, 2563316), (14, 1464752), (16, 1281658), (28, 732376), (32, 640829), (43, 476896), (56, 366188), (86, 238448), (112, 183094), (172, 119224), (224, 91547), (301, 68128), (344, 59612), (602, 34064), (688, 29806), (1204, 17032), (1376, 14903), (2129, 9632), (2408, 8516), (4258, 4816)]