721497

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 32

約数和(自身を含む): 1216512

約数和(自身を除く): 495015

約数列:

[1, 3, 7, 17, 21, 43, 47, 51, 119, 129, 141, 301, 329, 357, 731, 799, 903, 987, 2021, 2193, 2397, 5117, 5593, 6063, 14147, 15351, 16779, 34357, 42441, 103071, 240499, 721497]

約数ペア:

[(1, 721497), (3, 240499), (7, 103071), (17, 42441), (21, 34357), (43, 16779), (47, 15351), (51, 14147), (119, 6063), (129, 5593), (141, 5117), (301, 2397), (329, 2193), (357, 2021), (731, 987), (799, 903)]