21639995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4969}}^1$

素因数の和:5054

約数の個数: 16

約数和(自身を含む): 28388640

約数和(自身を除く): 6748645

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4969, 24845, 64597, 322985, 332923, 1664615, 4327999, 21639995]

約数ペア:

[(1, 21639995), (5, 4327999), (13, 1664615), (65, 332923), (67, 322985), (335, 64597), (871, 24845), (4355, 4969)]