21779979

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 32768064

約数和(自身を除く): 10988085

約数列:

[1, 3, 13, 39, 41, 53, 123, 159, 257, 533, 689, 771, 1599, 2067, 2173, 3341, 6519, 10023, 10537, 13621, 28249, 31611, 40863, 84747, 136981, 177073, 410943, 531219, 558461, 1675383, 7259993, 21779979]

約数ペア:

[(1, 21779979), (3, 7259993), (13, 1675383), (39, 558461), (41, 531219), (53, 410943), (123, 177073), (159, 136981), (257, 84747), (533, 40863), (689, 31611), (771, 28249), (1599, 13621), (2067, 10537), (2173, 10023), (3341, 6519)]