21904795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{6529}}^1$

素因数の和:6606

約数の個数: 16

約数和(自身を含む): 29149920

約数和(自身を除く): 7245125

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 6529, 32645, 71819, 359095, 398269, 1991345, 4380959, 21904795]

約数ペア:

[(1, 21904795), (5, 4380959), (11, 1991345), (55, 398269), (61, 359095), (305, 71819), (671, 32645), (3355, 6529)]