80978960

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7727}}^1$

素因数の和:7871

約数の個数: 40

約数和(自身を含む): 189737856

約数和(自身を除く): 108758896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 7727, 10480, 15454, 30908, 38635, 61816, 77270, 123632, 154540, 309080, 618160, 1012237, 2024474, 4048948, 5061185, 8097896, 10122370, 16195792, 20244740, 40489480, 80978960]

約数ペア:

[(1, 80978960), (2, 40489480), (4, 20244740), (5, 16195792), (8, 10122370), (10, 8097896), (16, 5061185), (20, 4048948), (40, 2024474), (80, 1012237), (131, 618160), (262, 309080), (524, 154540), (655, 123632), (1048, 77270), (1310, 61816), (2096, 38635), (2620, 30908), (5240, 15454), (7727, 10480)]