20725884

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 55786640

約数和(自身を除く): 35060756

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 157, 171, 193, 228, 314, 342, 386, 471, 579, 628, 684, 772, 942, 1158, 1413, 1737, 1884, 2316, 2826, 2983, 3474, 3667, 5652, 5966, 6948, 7334, 8949, 11001, 11932, 14668, 17898, 22002, 26847, 30301, 33003, 35796, 44004, 53694, 60602, 66006, 90903, 107388, 121204, 132012, 181806, 272709, 363612, 545418, 575719, 1090836, 1151438, 1727157, 2302876, 3454314, 5181471, 6908628, 10362942, 20725884]

約数ペア:

[(1, 20725884), (2, 10362942), (3, 6908628), (4, 5181471), (6, 3454314), (9, 2302876), (12, 1727157), (18, 1151438), (19, 1090836), (36, 575719), (38, 545418), (57, 363612), (76, 272709), (114, 181806), (157, 132012), (171, 121204), (193, 107388), (228, 90903), (314, 66006), (342, 60602), (386, 53694), (471, 44004), (579, 35796), (628, 33003), (684, 30301), (772, 26847), (942, 22002), (1158, 17898), (1413, 14668), (1737, 11932), (1884, 11001), (2316, 8949), (2826, 7334), (2983, 6948), (3474, 5966), (3667, 5652)]