21513014789

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{15679}}^1\times {\mathrm{6323}}^1$

素因数の和:22040

約数の個数: 16

約数和(自身を含む): 25385041920

約数和(自身を除く): 3872027131

約数列:

[1, 7, 31, 217, 6323, 15679, 44261, 109753, 196013, 486049, 1372091, 3402343, 99138317, 693968219, 3073287827, 21513014789]

約数ペア:

[(1, 21513014789), (7, 3073287827), (31, 693968219), (217, 99138317), (6323, 3402343), (15679, 1372091), (44261, 486049), (109753, 196013)]