213990217

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 269280000

約数和(自身を除く): 55289783

約数列:

[1, 7, 19, 29, 109, 133, 203, 509, 551, 763, 2071, 3161, 3563, 3857, 9671, 14497, 14761, 22127, 55481, 60059, 67697, 103327, 280459, 388367, 420413, 1054139, 1608949, 1963213, 7378973, 11262643, 30570031, 213990217]

約数ペア:

[(1, 213990217), (7, 30570031), (19, 11262643), (29, 7378973), (109, 1963213), (133, 1608949), (203, 1054139), (509, 420413), (551, 388367), (763, 280459), (2071, 103327), (3161, 67697), (3563, 60059), (3857, 55481), (9671, 22127), (14497, 14761)]