902890000

素因数分解:

$2^4\times 5^4\times {\mathrm{90289}}^1$

素因数の和:90317

約数の個数: 50

約数和(自身を含む): 2186011190

約数和(自身を除く): 1283121190

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 10000, 90289, 180578, 361156, 451445, 722312, 902890, 1444624, 1805780, 2257225, 3611560, 4514450, 7223120, 9028900, 11286125, 18057800, 22572250, 36115600, 45144500, 56430625, 90289000, 112861250, 180578000, 225722500, 451445000, 902890000]

約数ペア:

[(1, 902890000), (2, 451445000), (4, 225722500), (5, 180578000), (8, 112861250), (10, 90289000), (16, 56430625), (20, 45144500), (25, 36115600), (40, 22572250), (50, 18057800), (80, 11286125), (100, 9028900), (125, 7223120), (200, 4514450), (250, 3611560), (400, 2257225), (500, 1805780), (625, 1444624), (1000, 902890), (1250, 722312), (2000, 451445), (2500, 361156), (5000, 180578), (10000, 90289)]