21152872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{203393}}^1$

素因数の和:203412

約数の個数: 16

約数和(自身を含む): 42712740

約数和(自身を除く): 21559868

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 203393, 406786, 813572, 1627144, 2644109, 5288218, 10576436, 21152872]

約数ペア:

[(1, 21152872), (2, 10576436), (4, 5288218), (8, 2644109), (13, 1627144), (26, 813572), (52, 406786), (104, 203393)]