21900819

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1\times {\mathrm{761}}^1$

素因数の和:998

約数の個数: 16

約数和(自身を含む): 29955744

約数和(自身を除く): 8054925

約数列:

[1, 3, 53, 159, 181, 543, 761, 2283, 9593, 28779, 40333, 120999, 137741, 413223, 7300273, 21900819]

約数ペア:

[(1, 21900819), (3, 7300273), (53, 413223), (159, 137741), (181, 120999), (543, 40333), (761, 28779), (2283, 9593)]