21706828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 45116064

約数和(自身を除く): 23409236

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 137, 143, 274, 277, 286, 548, 554, 572, 1108, 1507, 1781, 3014, 3047, 3562, 3601, 6028, 6094, 7124, 7202, 12188, 14404, 19591, 37949, 39182, 39611, 75898, 78364, 79222, 151796, 158444, 417439, 493337, 834878, 986674, 1669756, 1973348, 5426707, 10853414, 21706828]

約数ペア:

[(1, 21706828), (2, 10853414), (4, 5426707), (11, 1973348), (13, 1669756), (22, 986674), (26, 834878), (44, 493337), (52, 417439), (137, 158444), (143, 151796), (274, 79222), (277, 78364), (286, 75898), (548, 39611), (554, 39182), (572, 37949), (1108, 19591), (1507, 14404), (1781, 12188), (3014, 7202), (3047, 7124), (3562, 6094), (3601, 6028)]