20639377

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 25937280

約数和(自身を除く): 5297903

約数列:

[1, 11, 17, 19, 37, 157, 187, 209, 323, 407, 629, 703, 1727, 2669, 2983, 3553, 5809, 6919, 7733, 11951, 29359, 32813, 50711, 63899, 98753, 110371, 131461, 557821, 1086283, 1214081, 1876307, 20639377]

約数ペア:

[(1, 20639377), (11, 1876307), (17, 1214081), (19, 1086283), (37, 557821), (157, 131461), (187, 110371), (209, 98753), (323, 63899), (407, 50711), (629, 32813), (703, 29359), (1727, 11951), (2669, 7733), (2983, 6919), (3553, 5809)]