8210000

素因数分解:

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

素因数の和:849

約数の個数: 50

約数和(自身を含む): 19901442

約数和(自身を除く): 11691442

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 821, 1000, 1250, 1642, 2000, 2500, 3284, 4105, 5000, 6568, 8210, 10000, 13136, 16420, 20525, 32840, 41050, 65680, 82100, 102625, 164200, 205250, 328400, 410500, 513125, 821000, 1026250, 1642000, 2052500, 4105000, 8210000]

約数ペア:

[(1, 8210000), (2, 4105000), (4, 2052500), (5, 1642000), (8, 1026250), (10, 821000), (16, 513125), (20, 410500), (25, 328400), (40, 205250), (50, 164200), (80, 102625), (100, 82100), (125, 65680), (200, 41050), (250, 32840), (400, 20525), (500, 16420), (625, 13136), (821, 10000), (1000, 8210), (1250, 6568), (1642, 5000), (2000, 4105), (2500, 3284)]