21305075

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{7043}}^1$

素因数の和:7075

約数の個数: 18

約数和(自身を含む): 29042412

約数和(自身を除く): 7737337

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 7043, 35215, 77473, 176075, 387365, 852203, 1936825, 4261015, 21305075]

約数ペア:

[(1, 21305075), (5, 4261015), (11, 1936825), (25, 852203), (55, 387365), (121, 176075), (275, 77473), (605, 35215), (3025, 7043)]