21729424

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{17191}}^1$

素因数の和:17278

約数の個数: 20

約数和(自身を含む): 42636160

約数和(自身を除く): 20906736

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 17191, 34382, 68764, 137528, 275056, 1358089, 2716178, 5432356, 10864712, 21729424]

約数ペア:

[(1, 21729424), (2, 10864712), (4, 5432356), (8, 2716178), (16, 1358089), (79, 275056), (158, 137528), (316, 68764), (632, 34382), (1264, 17191)]