21680529

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{881}}^1$

素因数の和:1528

約数の個数: 16

約数和(自身を含む): 31215744

約数和(自身を除く): 9535215

約数列:

[1, 3, 13, 39, 631, 881, 1893, 2643, 8203, 11453, 24609, 34359, 555911, 1667733, 7226843, 21680529]

約数ペア:

[(1, 21680529), (3, 7226843), (13, 1667733), (39, 555911), (631, 34359), (881, 24609), (1893, 11453), (2643, 8203)]