21359272

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 46604160

約数和(自身を除く): 25244888

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 61, 88, 92, 122, 173, 184, 244, 253, 346, 488, 506, 671, 692, 1012, 1342, 1384, 1403, 1903, 2024, 2684, 2806, 3806, 3979, 5368, 5612, 7612, 7958, 10553, 11224, 15224, 15433, 15916, 21106, 30866, 31832, 42212, 43769, 61732, 84424, 87538, 116083, 123464, 175076, 232166, 242719, 350152, 464332, 485438, 928664, 970876, 1941752, 2669909, 5339818, 10679636, 21359272]

約数ペア:

[(1, 21359272), (2, 10679636), (4, 5339818), (8, 2669909), (11, 1941752), (22, 970876), (23, 928664), (44, 485438), (46, 464332), (61, 350152), (88, 242719), (92, 232166), (122, 175076), (173, 123464), (184, 116083), (244, 87538), (253, 84424), (346, 61732), (488, 43769), (506, 42212), (671, 31832), (692, 30866), (1012, 21106), (1342, 15916), (1384, 15433), (1403, 15224), (1903, 11224), (2024, 10553), (2684, 7958), (2806, 7612), (3806, 5612), (3979, 5368)]