220757500

素因数分解:

$2^2\times 5^4\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:640

約数の個数: 60

約数和(自身を含む): 486125640

約数和(自身を除く): 265368140

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 227, 250, 389, 454, 500, 625, 778, 908, 1135, 1250, 1556, 1945, 2270, 2500, 3890, 4540, 5675, 7780, 9725, 11350, 19450, 22700, 28375, 38900, 48625, 56750, 88303, 97250, 113500, 141875, 176606, 194500, 243125, 283750, 353212, 441515, 486250, 567500, 883030, 972500, 1766060, 2207575, 4415150, 8830300, 11037875, 22075750, 44151500, 55189375, 110378750, 220757500]

約数ペア:

[(1, 220757500), (2, 110378750), (4, 55189375), (5, 44151500), (10, 22075750), (20, 11037875), (25, 8830300), (50, 4415150), (100, 2207575), (125, 1766060), (227, 972500), (250, 883030), (389, 567500), (454, 486250), (500, 441515), (625, 353212), (778, 283750), (908, 243125), (1135, 194500), (1250, 176606), (1556, 141875), (1945, 113500), (2270, 97250), (2500, 88303), (3890, 56750), (4540, 48625), (5675, 38900), (7780, 28375), (9725, 22700), (11350, 19450)]