40805000

素因数分解:

$2^3\times 5^4\times {\mathrm{8161}}^1$

素因数の和:8187

約数の個数: 40

約数和(自身を含む): 95617830

約数和(自身を除く): 54812830

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 8161, 16322, 32644, 40805, 65288, 81610, 163220, 204025, 326440, 408050, 816100, 1020125, 1632200, 2040250, 4080500, 5100625, 8161000, 10201250, 20402500, 40805000]

約数ペア:

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