21260791

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:606

約数の個数: 16

約数和(自身を含む): 23379840

約数和(自身を除く): 2119049

約数列:

[1, 19, 43, 53, 491, 817, 1007, 2279, 9329, 21113, 26023, 43301, 401147, 494437, 1118989, 21260791]

約数ペア:

[(1, 21260791), (19, 1118989), (43, 494437), (53, 401147), (491, 43301), (817, 26023), (1007, 21113), (2279, 9329)]