20783191

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5344169

約数列:

[1, 11, 13, 23, 71, 89, 143, 253, 299, 781, 923, 979, 1157, 1633, 2047, 3289, 6319, 10153, 12727, 17963, 21229, 22517, 26611, 69509, 82147, 145337, 233519, 292721, 903617, 1598707, 1889381, 20783191]

約数ペア:

[(1, 20783191), (11, 1889381), (13, 1598707), (23, 903617), (71, 292721), (89, 233519), (143, 145337), (253, 82147), (299, 69509), (781, 26611), (923, 22517), (979, 21229), (1157, 17963), (1633, 12727), (2047, 10153), (3289, 6319)]