2121318891

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{172171}}^1$

素因数の和:172251

約数の個数: 18

約数和(自身を含む): 3149198052

約数和(自身を除く): 1027879161

約数列:

[1, 3, 9, 37, 111, 333, 1369, 4107, 12321, 172171, 516513, 1549539, 6370327, 19110981, 57332943, 235702099, 707106297, 2121318891]

約数ペア:

[(1, 2121318891), (3, 707106297), (9, 235702099), (37, 57332943), (111, 19110981), (333, 6370327), (1369, 1549539), (4107, 516513), (12321, 172171)]