12780976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1429}}^1$

素因数の和:1493

約数の個数: 40

約数和(自身を含む): 27307280

約数和(自身を除く): 14526304

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 172, 208, 344, 559, 688, 1118, 1429, 2236, 2858, 4472, 5716, 8944, 11432, 18577, 22864, 37154, 61447, 74308, 122894, 148616, 245788, 297232, 491576, 798811, 983152, 1597622, 3195244, 6390488, 12780976]

約数ペア:

[(1, 12780976), (2, 6390488), (4, 3195244), (8, 1597622), (13, 983152), (16, 798811), (26, 491576), (43, 297232), (52, 245788), (86, 148616), (104, 122894), (172, 74308), (208, 61447), (344, 37154), (559, 22864), (688, 18577), (1118, 11432), (1429, 8944), (2236, 5716), (2858, 4472)]