31278429

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 56178304

約数和(自身を除く): 24899875

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 181, 211, 273, 543, 633, 819, 1267, 1477, 1629, 1899, 2353, 2743, 3801, 4431, 7059, 8229, 11403, 13293, 16471, 19201, 21177, 24687, 38191, 49413, 57603, 114573, 148239, 172809, 267337, 343719, 496483, 802011, 1489449, 2406033, 3475381, 4468347, 10426143, 31278429]

約数ペア:

[(1, 31278429), (3, 10426143), (7, 4468347), (9, 3475381), (13, 2406033), (21, 1489449), (39, 802011), (63, 496483), (91, 343719), (117, 267337), (181, 172809), (211, 148239), (273, 114573), (543, 57603), (633, 49413), (819, 38191), (1267, 24687), (1477, 21177), (1629, 19201), (1899, 16471), (2353, 13293), (2743, 11403), (3801, 8229), (4431, 7059)]