81684724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{491}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 165312000

約数和(自身を除く): 83627276

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 199, 209, 398, 418, 491, 796, 836, 982, 1964, 2189, 3781, 4378, 5401, 7562, 8756, 9329, 10802, 15124, 18658, 21604, 37316, 41591, 83182, 97709, 102619, 166364, 195418, 205238, 390836, 410476, 1074799, 1856471, 2149598, 3712942, 4299196, 7425884, 20421181, 40842362, 81684724]

約数ペア:

[(1, 81684724), (2, 40842362), (4, 20421181), (11, 7425884), (19, 4299196), (22, 3712942), (38, 2149598), (44, 1856471), (76, 1074799), (199, 410476), (209, 390836), (398, 205238), (418, 195418), (491, 166364), (796, 102619), (836, 97709), (982, 83182), (1964, 41591), (2189, 37316), (3781, 21604), (4378, 18658), (5401, 15124), (7562, 10802), (8756, 9329)]