21889637

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{4243}}^1$

素因数の和:4328

約数の個数: 16

約数和(自身を含む): 27704832

約数和(自身を除く): 5815195

約数列:

[1, 7, 11, 67, 77, 469, 737, 4243, 5159, 29701, 46673, 284281, 326711, 1989967, 3127091, 21889637]

約数ペア:

[(1, 21889637), (7, 3127091), (11, 1989967), (67, 326711), (77, 284281), (469, 46673), (737, 29701), (4243, 5159)]