80455000

素因数分解:

$2^3\times 5^4\times {\mathrm{16091}}^1$

素因数の和:16117

約数の個数: 40

約数和(自身を含む): 188517780

約数和(自身を除く): 108062780

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 16091, 32182, 64364, 80455, 128728, 160910, 321820, 402275, 643640, 804550, 1609100, 2011375, 3218200, 4022750, 8045500, 10056875, 16091000, 20113750, 40227500, 80455000]

約数ペア:

[(1, 80455000), (2, 40227500), (4, 20113750), (5, 16091000), (8, 10056875), (10, 8045500), (20, 4022750), (25, 3218200), (40, 2011375), (50, 1609100), (100, 804550), (125, 643640), (200, 402275), (250, 321820), (500, 160910), (625, 128728), (1000, 80455), (1250, 64364), (2500, 32182), (5000, 16091)]