21817521

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{7109}}^1$

素因数の和:7157

約数の個数: 24

約数和(自身を含む): 35493120

約数和(自身を除く): 13675599

約数列:

[1, 3, 9, 11, 31, 33, 93, 99, 279, 341, 1023, 3069, 7109, 21327, 63981, 78199, 220379, 234597, 661137, 703791, 1983411, 2424169, 7272507, 21817521]

約数ペア:

[(1, 21817521), (3, 7272507), (9, 2424169), (11, 1983411), (31, 703791), (33, 661137), (93, 234597), (99, 220379), (279, 78199), (341, 63981), (1023, 21327), (3069, 7109)]