201820000

素因数分解:

$2^5\times 5^4\times {\mathrm{10091}}^1$

素因数の和:10121

約数の個数: 60

約数和(自身を含む): 496556676

約数和(自身を除く): 294736676

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 4000, 5000, 10000, 10091, 20000, 20182, 40364, 50455, 80728, 100910, 161456, 201820, 252275, 322912, 403640, 504550, 807280, 1009100, 1261375, 1614560, 2018200, 2522750, 4036400, 5045500, 6306875, 8072800, 10091000, 12613750, 20182000, 25227500, 40364000, 50455000, 100910000, 201820000]

約数ペア:

[(1, 201820000), (2, 100910000), (4, 50455000), (5, 40364000), (8, 25227500), (10, 20182000), (16, 12613750), (20, 10091000), (25, 8072800), (32, 6306875), (40, 5045500), (50, 4036400), (80, 2522750), (100, 2018200), (125, 1614560), (160, 1261375), (200, 1009100), (250, 807280), (400, 504550), (500, 403640), (625, 322912), (800, 252275), (1000, 201820), (1250, 161456), (2000, 100910), (2500, 80728), (4000, 50455), (5000, 40364), (10000, 20182), (10091, 20000)]