28117719

素因数分解:

$3^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{401}}^1$

素因数の和:477

約数の個数: 48

約数和(自身を含む): 49494240

約数和(自身を除く): 21376521

約数列:

[1, 3, 7, 9, 21, 27, 49, 53, 63, 147, 159, 189, 371, 401, 441, 477, 1113, 1203, 1323, 1431, 2597, 2807, 3339, 3609, 7791, 8421, 10017, 10827, 19649, 21253, 23373, 25263, 58947, 63759, 70119, 75789, 148771, 176841, 191277, 446313, 530523, 573831, 1041397, 1338939, 3124191, 4016817, 9372573, 28117719]

約数ペア:

[(1, 28117719), (3, 9372573), (7, 4016817), (9, 3124191), (21, 1338939), (27, 1041397), (49, 573831), (53, 530523), (63, 446313), (147, 191277), (159, 176841), (189, 148771), (371, 75789), (401, 70119), (441, 63759), (477, 58947), (1113, 25263), (1203, 23373), (1323, 21253), (1431, 19649), (2597, 10827), (2807, 10017), (3339, 8421), (3609, 7791)]