131983960

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{4019}}^1$

素因数の和:4851

約数の個数: 32

約数和(自身を含む): 297399600

約数和(自身を除く): 165415640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 3284, 4019, 4105, 6568, 8038, 8210, 16076, 16420, 20095, 32152, 32840, 40190, 80380, 160760, 3299599, 6599198, 13198396, 16497995, 26396792, 32995990, 65991980, 131983960]

約数ペア:

[(1, 131983960), (2, 65991980), (4, 32995990), (5, 26396792), (8, 16497995), (10, 13198396), (20, 6599198), (40, 3299599), (821, 160760), (1642, 80380), (3284, 40190), (4019, 32840), (4105, 32152), (6568, 20095), (8038, 16420), (8210, 16076)]