287757561

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{9851}}^1$

素因数の和:9981

約数の個数: 32

約数和(自身を含む): 476679168

約数和(自身を除く): 188921607

約数列:

[1, 3, 7, 13, 21, 39, 91, 107, 273, 321, 749, 1391, 2247, 4173, 9737, 9851, 29211, 29553, 68957, 128063, 206871, 384189, 896441, 1054057, 2689323, 3162171, 7378399, 13702741, 22135197, 41108223, 95919187, 287757561]

約数ペア:

[(1, 287757561), (3, 95919187), (7, 41108223), (13, 22135197), (21, 13702741), (39, 7378399), (91, 3162171), (107, 2689323), (273, 1054057), (321, 896441), (749, 384189), (1391, 206871), (2247, 128063), (4173, 68957), (9737, 29553), (9851, 29211)]