2778125

素因数分解:

$5^5\times 7^1\times {\mathrm{127}}^1$

素因数の和:159

約数の個数: 24

約数和(自身を含む): 3999744

約数和(自身を除く): 1221619

約数列:

[1, 5, 7, 25, 35, 125, 127, 175, 625, 635, 875, 889, 3125, 3175, 4375, 4445, 15875, 21875, 22225, 79375, 111125, 396875, 555625, 2778125]

約数ペア:

[(1, 2778125), (5, 555625), (7, 396875), (25, 111125), (35, 79375), (125, 22225), (127, 21875), (175, 15875), (625, 4445), (635, 4375), (875, 3175), (889, 3125)]