129869680

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{20549}}^1$

素因数の和:20641

約数の個数: 40

約数和(自身を含む): 305784000

約数和(自身を除く): 175914320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 20549, 41098, 82196, 102745, 164392, 205490, 328784, 410980, 821960, 1623371, 1643920, 3246742, 6493484, 8116855, 12986968, 16233710, 25973936, 32467420, 64934840, 129869680]

約数ペア:

[(1, 129869680), (2, 64934840), (4, 32467420), (5, 25973936), (8, 16233710), (10, 12986968), (16, 8116855), (20, 6493484), (40, 3246742), (79, 1643920), (80, 1623371), (158, 821960), (316, 410980), (395, 328784), (632, 205490), (790, 164392), (1264, 102745), (1580, 82196), (3160, 41098), (6320, 20549)]