21258875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{15461}}^1$

素因数の和:15487

約数の個数: 16

約数和(自身を含む): 28944864

約数和(自身を除く): 7685989

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 15461, 77305, 170071, 386525, 850355, 1932625, 4251775, 21258875]

約数ペア:

[(1, 21258875), (5, 4251775), (11, 1932625), (25, 850355), (55, 386525), (125, 170071), (275, 77305), (1375, 15461)]