16978155

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{479}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 12052245

約数列:

[1, 3, 5, 15, 17, 51, 85, 139, 255, 417, 479, 695, 1437, 2085, 2363, 2395, 7089, 7185, 8143, 11815, 24429, 35445, 40715, 66581, 122145, 199743, 332905, 998715, 1131877, 3395631, 5659385, 16978155]

約数ペア:

[(1, 16978155), (3, 5659385), (5, 3395631), (15, 1131877), (17, 998715), (51, 332905), (85, 199743), (139, 122145), (255, 66581), (417, 40715), (479, 35445), (695, 24429), (1437, 11815), (2085, 8143), (2363, 7185), (2395, 7089)]