21385133

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^2$

素因数の和:114

約数の個数: 36

約数和(自身を含む): 29265696

約数和(自身を除く): 7880563

約数列:

[1, 7, 11, 17, 31, 77, 119, 187, 217, 289, 341, 527, 961, 1309, 2023, 2387, 3179, 3689, 5797, 6727, 8959, 10571, 16337, 22253, 40579, 62713, 73997, 98549, 114359, 179707, 277729, 689843, 1257949, 1944103, 3055019, 21385133]

約数ペア:

[(1, 21385133), (7, 3055019), (11, 1944103), (17, 1257949), (31, 689843), (77, 277729), (119, 179707), (187, 114359), (217, 98549), (289, 73997), (341, 62713), (527, 40579), (961, 22253), (1309, 16337), (2023, 10571), (2387, 8959), (3179, 6727), (3689, 5797)]