19634960

素因数分解:

$2^4\times 5^1\times {\mathrm{245437}}^1$

素因数の和:245450

約数の個数: 20

約数和(自身を含む): 45651468

約数和(自身を除く): 26016508

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245437, 490874, 981748, 1227185, 1963496, 2454370, 3926992, 4908740, 9817480, 19634960]

約数ペア:

[(1, 19634960), (2, 9817480), (4, 4908740), (5, 3926992), (8, 2454370), (10, 1963496), (16, 1227185), (20, 981748), (40, 490874), (80, 245437)]