81691868

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1193}}^1$

素因数の和:1286

約数の個数: 48

約数和(自身を含む): 162479520

約数和(自身を除く): 80787652

約数列:

[1, 2, 4, 17, 19, 34, 38, 53, 68, 76, 106, 212, 323, 646, 901, 1007, 1193, 1292, 1802, 2014, 2386, 3604, 4028, 4772, 17119, 20281, 22667, 34238, 40562, 45334, 63229, 68476, 81124, 90668, 126458, 252916, 385339, 770678, 1074893, 1201351, 1541356, 2149786, 2402702, 4299572, 4805404, 20422967, 40845934, 81691868]

約数ペア:

[(1, 81691868), (2, 40845934), (4, 20422967), (17, 4805404), (19, 4299572), (34, 2402702), (38, 2149786), (53, 1541356), (68, 1201351), (76, 1074893), (106, 770678), (212, 385339), (323, 252916), (646, 126458), (901, 90668), (1007, 81124), (1193, 68476), (1292, 63229), (1802, 45334), (2014, 40562), (2386, 34238), (3604, 22667), (4028, 20281), (4772, 17119)]