2808260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1543}}^1$

素因数の和:1572

約数の個数: 48

約数和(自身を含む): 7262976

約数和(自身を除く): 4454716

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1543, 1820, 3086, 6172, 7715, 10801, 15430, 20059, 21602, 30860, 40118, 43204, 54005, 80236, 100295, 108010, 140413, 200590, 216020, 280826, 401180, 561652, 702065, 1404130, 2808260]

約数ペア:

[(1, 2808260), (2, 1404130), (4, 702065), (5, 561652), (7, 401180), (10, 280826), (13, 216020), (14, 200590), (20, 140413), (26, 108010), (28, 100295), (35, 80236), (52, 54005), (65, 43204), (70, 40118), (91, 30860), (130, 21602), (140, 20059), (182, 15430), (260, 10801), (364, 7715), (455, 6172), (910, 3086), (1543, 1820)]