20396684

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1409}}^1$

素因数の和:1478

約数の個数: 48

約数和(自身を含む): 45480960

約数和(自身を除く): 25084276

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 47, 77, 94, 154, 188, 308, 329, 517, 658, 1034, 1316, 1409, 2068, 2818, 3619, 5636, 7238, 9863, 14476, 15499, 19726, 30998, 39452, 61996, 66223, 108493, 132446, 216986, 264892, 433972, 463561, 728453, 927122, 1456906, 1854244, 2913812, 5099171, 10198342, 20396684]

約数ペア:

[(1, 20396684), (2, 10198342), (4, 5099171), (7, 2913812), (11, 1854244), (14, 1456906), (22, 927122), (28, 728453), (44, 463561), (47, 433972), (77, 264892), (94, 216986), (154, 132446), (188, 108493), (308, 66223), (329, 61996), (517, 39452), (658, 30998), (1034, 19726), (1316, 15499), (1409, 14476), (2068, 9863), (2818, 7238), (3619, 5636)]