80398540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{98047}}^1$

素因数の和:98097

約数の個数: 24

約数和(自身を含む): 172956672

約数和(自身を除く): 92558132

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 98047, 196094, 392188, 490235, 980470, 1960940, 4019927, 8039854, 16079708, 20099635, 40199270, 80398540]

約数ペア:

[(1, 80398540), (2, 40199270), (4, 20099635), (5, 16079708), (10, 8039854), (20, 4019927), (41, 1960940), (82, 980470), (164, 490235), (205, 392188), (410, 196094), (820, 98047)]