21124761

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1259}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13711719

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 1259, 2397, 3777, 5593, 8813, 16779, 21403, 26439, 59173, 64209, 149821, 177519, 414211, 449463, 1005941, 1242633, 3017823, 7041587, 21124761]

約数ペア:

[(1, 21124761), (3, 7041587), (7, 3017823), (17, 1242633), (21, 1005941), (47, 449463), (51, 414211), (119, 177519), (141, 149821), (329, 64209), (357, 59173), (799, 26439), (987, 21403), (1259, 16779), (2397, 8813), (3777, 5593)]