77509220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{90127}}^1$

素因数の和:90179

約数の個数: 24

約数和(自身を含む): 166556544

約数和(自身を除く): 89047324

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 90127, 180254, 360508, 450635, 901270, 1802540, 3875461, 7750922, 15501844, 19377305, 38754610, 77509220]

約数ペア:

[(1, 77509220), (2, 38754610), (4, 19377305), (5, 15501844), (10, 7750922), (20, 3875461), (43, 1802540), (86, 901270), (172, 450635), (215, 360508), (430, 180254), (860, 90127)]