80485340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{309559}}^1$

素因数の和:309581

約数の個数: 24

約数和(自身を含む): 182021280

約数和(自身を除く): 101535940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 309559, 619118, 1238236, 1547795, 3095590, 4024267, 6191180, 8048534, 16097068, 20121335, 40242670, 80485340]

約数ペア:

[(1, 80485340), (2, 40242670), (4, 20121335), (5, 16097068), (10, 8048534), (13, 6191180), (20, 4024267), (26, 3095590), (52, 1547795), (65, 1238236), (130, 619118), (260, 309559)]