21012423

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8573}}^1$

素因数の和:8638

約数の個数: 16

約数和(自身を含む): 30180480

約数和(自身を除く): 9168057

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8573, 25719, 162887, 368639, 488661, 1105917, 7004141, 21012423]

約数ペア:

[(1, 21012423), (3, 7004141), (19, 1105917), (43, 488661), (57, 368639), (129, 162887), (817, 25719), (2451, 8573)]