397305

素因数分解:

$3^6\times 5^1\times {\mathrm{109}}^1$

素因数の和:132

約数の個数: 28

約数和(自身を含む): 721380

約数和(自身を除く): 324075

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 135, 243, 327, 405, 545, 729, 981, 1215, 1635, 2943, 3645, 4905, 8829, 14715, 26487, 44145, 79461, 132435, 397305]

約数ペア:

[(1, 397305), (3, 132435), (5, 79461), (9, 44145), (15, 26487), (27, 14715), (45, 8829), (81, 4905), (109, 3645), (135, 2943), (243, 1635), (327, 1215), (405, 981), (545, 729)]