128220500

素因数分解:

$2^2\times 5^3\times {\mathrm{256441}}^1$

素因数の和:256460

約数の個数: 24

約数和(自身を含む): 280034664

約数和(自身を除く): 151814164

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 256441, 512882, 1025764, 1282205, 2564410, 5128820, 6411025, 12822050, 25644100, 32055125, 64110250, 128220500]

約数ペア:

[(1, 128220500), (2, 64110250), (4, 32055125), (5, 25644100), (10, 12822050), (20, 6411025), (25, 5128820), (50, 2564410), (100, 1282205), (125, 1025764), (250, 512882), (500, 256441)]