21207804945

素因数分解:

$3^1\times 5^1\times {\mathrm{3769}}^1\times {\mathrm{375127}}^1$

素因数の和:378904

約数の個数: 16

約数和(自身を含む): 33941581440

約数和(自身を除く): 12733776495

約数列:

[1, 3, 5, 15, 3769, 11307, 18845, 56535, 375127, 1125381, 1875635, 5626905, 1413853663, 4241560989, 7069268315, 21207804945]

約数ペア:

[(1, 21207804945), (3, 7069268315), (5, 4241560989), (15, 1413853663), (3769, 5626905), (11307, 1875635), (18845, 1125381), (56535, 375127)]