21390487

素因数分解:

${\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:306

約数の個数: 16

約数和(自身を含む): 22888800

約数和(自身を除く): 1498313

約数列:

[1, 29, 67, 101, 109, 1943, 2929, 3161, 6767, 7303, 11009, 196243, 211787, 319261, 737603, 21390487]

約数ペア:

[(1, 21390487), (29, 737603), (67, 319261), (101, 211787), (109, 196243), (1943, 11009), (2929, 7303), (3161, 6767)]