258889407

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{4973}}^1$

素因数の和:5087

約数の個数: 32

約数和(自身を含む): 411290112

約数和(自身を除く): 152400705

約数列:

[1, 3, 7, 21, 37, 67, 111, 201, 259, 469, 777, 1407, 2479, 4973, 7437, 14919, 17353, 34811, 52059, 104433, 184001, 333191, 552003, 999573, 1288007, 2332337, 3864021, 6997011, 12328067, 36984201, 86296469, 258889407]

約数ペア:

[(1, 258889407), (3, 86296469), (7, 36984201), (21, 12328067), (37, 6997011), (67, 3864021), (111, 2332337), (201, 1288007), (259, 999573), (469, 552003), (777, 333191), (1407, 184001), (2479, 104433), (4973, 52059), (7437, 34811), (14919, 17353)]