1600225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^2$

素因数の和:78

約数の個数: 27

約数和(自身を含む): 2280019

約数和(自身を除く): 679794

約数列:

[1, 5, 11, 23, 25, 55, 115, 121, 253, 275, 529, 575, 605, 1265, 2645, 2783, 3025, 5819, 6325, 13225, 13915, 29095, 64009, 69575, 145475, 320045, 1600225]

約数ペア:

[(1, 1600225), (5, 320045), (11, 145475), (23, 69575), (25, 64009), (55, 29095), (115, 13915), (121, 13225), (253, 6325), (275, 5819), (529, 3025), (575, 2783), (605, 2645)]