21000907993

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{5001407}}^1$

素因数の和:5001456

約数の個数: 16

約数和(自身を含む): 25207096320

約数和(自身を除く): 4206188327

約数列:

[1, 13, 17, 19, 221, 247, 323, 4199, 5001407, 65018291, 85023919, 95026733, 1105310947, 1235347529, 1615454461, 21000907993]

約数ペア:

[(1, 21000907993), (13, 1615454461), (17, 1235347529), (19, 1105310947), (221, 95026733), (247, 85023919), (323, 65018291), (4199, 5001407)]