81610000

素因数分解:

$2^4\times 5^4\times {\mathrm{8161}}^1$

素因数の和:8189

約数の個数: 50

約数和(自身を含む): 197610182

約数和(自身を除く): 116000182

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, 8161, 10000, 16322, 32644, 40805, 65288, 81610, 130576, 163220, 204025, 326440, 408050, 652880, 816100, 1020125, 1632200, 2040250, 3264400, 4080500, 5100625, 8161000, 10201250, 16322000, 20402500, 40805000, 81610000]

約数ペア:

[(1, 81610000), (2, 40805000), (4, 20402500), (5, 16322000), (8, 10201250), (10, 8161000), (16, 5100625), (20, 4080500), (25, 3264400), (40, 2040250), (50, 1632200), (80, 1020125), (100, 816100), (125, 652880), (200, 408050), (250, 326440), (400, 204025), (500, 163220), (625, 130576), (1000, 81610), (1250, 65288), (2000, 40805), (2500, 32644), (5000, 16322), (8161, 10000)]