15943820

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{971}}^1$

素因数の和:1801

約数の個数: 24

約数和(自身を含む): 33557328

約数和(自身を除く): 17613508

約数列:

[1, 2, 4, 5, 10, 20, 821, 971, 1642, 1942, 3284, 3884, 4105, 4855, 8210, 9710, 16420, 19420, 797191, 1594382, 3188764, 3985955, 7971910, 15943820]

約数ペア:

[(1, 15943820), (2, 7971910), (4, 3985955), (5, 3188764), (10, 1594382), (20, 797191), (821, 19420), (971, 16420), (1642, 9710), (1942, 8210), (3284, 4855), (3884, 4105)]