21871949

素因数分解:

${\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 2803891

約数列:

[1, 11, 59, 67, 503, 649, 737, 3953, 5533, 29677, 33701, 43483, 326447, 370711, 1988359, 21871949]

約数ペア:

[(1, 21871949), (11, 1988359), (59, 370711), (67, 326447), (503, 43483), (649, 33701), (737, 29677), (3953, 5533)]