1339821

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:175

約数の個数: 40

約数和(自身を含む): 2439360

約数和(自身を除く): 1099539

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 139, 153, 189, 357, 417, 459, 567, 973, 1071, 1251, 1377, 2363, 2919, 3213, 3753, 7089, 8757, 9639, 11259, 16541, 21267, 26271, 49623, 63801, 78813, 148869, 191403, 446607, 1339821]

約数ペア:

[(1, 1339821), (3, 446607), (7, 191403), (9, 148869), (17, 78813), (21, 63801), (27, 49623), (51, 26271), (63, 21267), (81, 16541), (119, 11259), (139, 9639), (153, 8757), (189, 7089), (357, 3753), (417, 3213), (459, 2919), (567, 2363), (973, 1377), (1071, 1251)]