51809420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199267}}^1$

素因数の和:199289

約数の個数: 24

約数和(自身を含む): 117169584

約数和(自身を除く): 65360164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 199267, 398534, 797068, 996335, 1992670, 2590471, 3985340, 5180942, 10361884, 12952355, 25904710, 51809420]

約数ペア:

[(1, 51809420), (2, 25904710), (4, 12952355), (5, 10361884), (10, 5180942), (13, 3985340), (20, 2590471), (26, 1992670), (52, 996335), (65, 797068), (130, 398534), (260, 199267)]