20807907

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1637}}^1$

素因数の和:1882

約数の個数: 16

約数和(自身を含む): 29352960

約数和(自身を除く): 8545053

約数列:

[1, 3, 19, 57, 223, 669, 1637, 4237, 4911, 12711, 31103, 93309, 365051, 1095153, 6935969, 20807907]

約数ペア:

[(1, 20807907), (3, 6935969), (19, 1095153), (57, 365051), (223, 93309), (669, 31103), (1637, 12711), (4237, 4911)]