21432189

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 32123520

約数和(自身を除く): 10691331

約数列:

[1, 3, 17, 29, 43, 51, 87, 129, 337, 493, 731, 1011, 1247, 1479, 2193, 3741, 5729, 9773, 14491, 17187, 21199, 29319, 43473, 63597, 166141, 246347, 420239, 498423, 739041, 1260717, 7144063, 21432189]

約数ペア:

[(1, 21432189), (3, 7144063), (17, 1260717), (29, 739041), (43, 498423), (51, 420239), (87, 246347), (129, 166141), (337, 63597), (493, 43473), (731, 29319), (1011, 21199), (1247, 17187), (1479, 14491), (2193, 9773), (3741, 5729)]