4105000

素因数分解:

$2^3\times 5^4\times {\mathrm{821}}^1$

素因数の和:847

約数の個数: 40

約数和(自身を含む): 9629730

約数和(自身を除く): 5524730

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 821, 1000, 1250, 1642, 2500, 3284, 4105, 5000, 6568, 8210, 16420, 20525, 32840, 41050, 82100, 102625, 164200, 205250, 410500, 513125, 821000, 1026250, 2052500, 4105000]

約数ペア:

[(1, 4105000), (2, 2052500), (4, 1026250), (5, 821000), (8, 513125), (10, 410500), (20, 205250), (25, 164200), (40, 102625), (50, 82100), (100, 41050), (125, 32840), (200, 20525), (250, 16420), (500, 8210), (625, 6568), (821, 5000), (1000, 4105), (1250, 3284), (1642, 2500)]